Assuming you would like to create a portfolio with $6$ assets having the following returns: $-2$X$,-$X$,0,$ X$,2$X$,$ and $3$X$.$ What is the value of X$,$ given that you aim for a portfolio with a variance return of $1879?($round your final answer to $1$ decimal place: $20\mathrm{.}456-->20\mathrm{.}5)$