Two mutually exclusive projects require the same $800,000 in initial investment. Afterwards, the first project provides the following cash flows over the next four years: $400,000, $250,000, $200,000, and $600,000. The second project provides the following cash flows over the next four years: $600,000, $200,000, $250,000, and $400,000. The target payback period is 3 years. Which project should you undertake? Explain with appropriate calculations.