1. The problem states that we have a point $A$ with coordinates $(3,1,2)$ in 3D space. 2. This is a straightforward identification of a point in three-dimensional Cartesian coordinates, where $x=3$, $y=1$, and $z=2$. 3. No further calculations are requested, so the point $A$ is simply $A(3,1,2)$. This completes the problem as stated.