Portfolio Required Return

Suppose you manage a $$2$ million fund that consists of four stocks with the following investments:

$\backslash$table$[[$Stock$,$Investment,Beta$],[$A$,$$$300,000,1\mathrm{.}50],[$B$,500,000,-0\mathrm{.}50],[$C$,800,000,1\mathrm{.}25],[$D$,400,000,0\mathrm{.}75]]$

$\%$