Please help ASAP!

( IRR, payback, and calculating a missing cash flow )

Mode Publishing is considering building a new printing facility that will involve a large initial outlay and then result in a series of positive cash flows for 4 years. The estimated cash flows associated with this project are below: If you know that the project has a regular payback of 2.7 years, what is the project's internal rate of return?

a) What is the project's internal rate of return? __%

YEAR PROJECT CASH FLOW

0 (initial outlay) ?

1 700

2 300

3 400

4 300