Warr Company is considering a project that has the following cash flow data. What is the project's IRR? Note that a project's projected IRR can be less than the WACC or negative, in both cases it will be rejected.

$\backslash$table$[[$Year$,0,1,2,3,4],[,,,,,],[$Cash flows,$-$$$1,420,$$$400,$$$400,$$$400,$$$400$