The present value of the following cash flow stream with annual payments (at t=0) is $1262.23 with the discount rate being 11.66% compounded semi-annually.

What is the value of the missing cash flows (x)?

Note that the cash flow stream consists of $100 paid at end of year 1, x paid at the end of year 2 until the end of year 4, and $100 paid forever thereafter (starting at the end of year 5)