Answer
$$ (4,3,2).$$
Work Step by Step
Assume that the terminal point of the vector $ v = \langle 3, 2, 1\rangle $ is $(a,b,c)$. Then, we have
$$ \langle 3, 2, 1\rangle=(a,b,c)-(1,1,1)\Longrightarrow 3=a-1, \quad 2=b-1, \quad 1=c-1. $$
By solving the equations, we get the terminal point as follows
$$(a,b,c)=(4,3,2).$$
