where Q refers to the sequential quarter number and Q$=1$ for winter of Year $1.$ In$$ addition, the multiplicative seasonal factors are as$$ follows:

$$

$$Quarter

Factor$($Index$)$

$$Winter

$0\mathrm{.}72$

$$Spring

$1\mathrm{.}20$

$$Summer

$1\mathrm{.}40$

$$Fall

$0\mathrm{.}68$

Part $2$

In year $26($quarters $101-104),$ the energy use for each of the quarters beginning with winter is $($round your response to one decimal$$ place$)$: