The values of the first three Jacobi iterations are given for an unknown system. Find the values of the fourth iteration.

$n$	$x_1$	$x_2$	$x_3$
$0$	$0$	$0$	$0$
$1$	-2	1	1
$2$	4	-3	-5
$3$	10	-3	5
$4$