What is the beta of the following portfolio?

$\backslash$table$[[$Stock$,\backslash$table$[[$Amount$],[$Invested$]],\backslash$table$[[$Security$],[$Beta$]]],[A,$$$6,000,1\mathrm{.}37],[$B$,$$$17,900,\mathrm{.}95],[$C$,$$$2,750,1\mathrm{.}48],[1\mathrm{.}54,,],[1\mathrm{.}40,,],[1\mathrm{.}49,,],[1\mathrm{.}10,,],[1\mathrm{.}27,,]]$