Suppose you are the money manager of an investment fund. The fund consists of four stocks with the following investments and betas:

$\backslash$table$[[$Stock$,$Investment,Beta$],[$A$,$$$488,521,0\mathrm{.}85],[$B$,$$$625,047,0],[$C$,$$$1,127,798,0\mathrm{.}48],[$D$,$$$1,919,052,1\mathrm{.}23]]$

What is the beta coefficient of the portfolio?