Weekly growth forecast based on annual number

Hi there,

I have an annual sales target where I want to calculate the linear growth needed on a weekly basis so that the total for the year = the sales target. I have week 1 as a starting point. From there I want to grow linearly to hit the annual goal.

Example Annual Target 100,000

Week 1 - 1,000 (known starting point)
Week 2
Week 3
Week 4...

I have laid out the example in the attached spreadsheet. (submitted in excel 2003 format though I am on 2007)

Is there some kind of range formula I can use to calculate, based on the week 1 starting point and the annual goal, what the rest of the weeks would need to be growing linear, week over week? I have been trying to use TREND and other formulas, but those seem to based only on historical data and not this future annual goal.

I am a first time poster, so thanks in advance for any insight.

- Brian