$${ 2 }^{ x+1 } + { 2 }^{ x+2 } + { 2 }^{ x } +3=448$$
$x=\frac{2\pi n_{1}i}{\ln(2)}+\log_{2}\left(\frac{445}{7}\right)$
$n_{1}\in \mathrm{Z}$
$x=\log_{2}\left(\frac{445}{7}\right)\approx 5.990306604$
