Given the data below.

Develop a forecast for period $6$ using $(1)$ a naive forecasting method, $(2)$ a moving average forecast using four$-$periods, and $(3)$ a four$-$period weighted moving average using weights of $0\mathrm{.}4,0\mathrm{.}3,0\mathrm{.}2$ and $0\mathrm{.}1.$ Show your work.

$\backslash$table$[[$Period$,$Demand$],[1,190],[2,220],[3,185],[4,198],[5,205]]$