I'm not going to give you a direct answer to your question for the following reasons.
It is vitally important when setting up a business in France, or anywhere else for that matter, to get the groundwork 100% right so that there are no nasty surprises later on. You will understand that without the full facts of each individual case it is impossible to give proper and sound advice.
To the best of my knowledge the form 1447-C-K has been superceeded by the form 1447-C-SD but as with all these things it may depend on the individual case, the time scale, and, probably, what forms the tax office had in stock at the time. Really!
So if you are not sure, my advice is to find someone who can help and make sure you are doing the right thing.
For instance, what is printed as the heading to your form? Is it:
Cotisation Foncière Des Entreprises 2011
Imposition Forfaitaire sur les Entreprises de Réseaux 2011
and does the square inder the number 1447-C-K say:
What is your business and what code APE or NAF have they given you, if they already have?
When did you register? What documents have you already signed? Do you have copîes of them? All these things have bearing on whether all is well, or needs some 'tweaking' and correction.
And from your profile Judith, as an Agent Commercial working in Immobillier, there are other important questions that arise, and this is not the place to discuss them.
Judith, a business is an important step. If you are not sure, get some help from someone like the LeLingo.fr bilingual helpline or similar. There are people out there who can help you. It shouldn't take very long, or cost very much to set you on the right path.
I'm sorry that I can't help more than that without ALL the information that is required to be able to give you a solid answer.
I do hope that makes sense to you.