Develop a two$-$period weighted moving average forecast for periods $12$ through $15.$ Use weights of $0\mathrm{.}7$ and $0\mathrm{.}3,$ with the most recent observation weighted higher.

$\backslash$table$[[$Period$,$Demand$],[10,214],[11,337],[12,420],[13,292],[14,455]]$

Calculate the forecasts for periods $12-15$ by using a two$-$period weighted moving average model $($enter your responses rounded to the nearest whole number$)$

$\backslash$table$[[$Period$,$Demand,Forecast$],[10,214,],[11,337,],[12,420,]]$