Solve for Future CF to hit target IRR

I am trying to figure out a formula that will return a cash flow that will result in a specific IRR target. Example:

Investor contributes $1,000,000 in year 0
Investor earns 9% compounded annually on their money (paid as cash flows allow, otherwise accrued)

Payments of cash flow are made as follows:

1. First to Investor to satisfy 9% preferred return
2. Second to Investor to repay any accrued preferred return
3. Third to repay Investor's initial contribution
4. Fourth 70/30 (Investor/partner) until Investor receives 20% IRR
5. Fifth 50/50

Because the cash flows don't support the 9% in the early years, the cash flows aren't the same year over year and thus I am getting hung up on using the FV calculation to back into the number required to get my Investor to a 20% return.

Is there a way to solve for a Future Value when the cash flows aren't even every year?