Instructions
Enter the Capricorn door. It's assumed that you have already explored all of the other available doors, including the Taurus door.
Go to the pillar by the left statue and cast the "Grip" spell. This will reveal a chest that is actually a Mimic. Defeat it and go to the next room.
Move the statues to their corresponding shapes on the ground. The right statue goes into the square hole, the top statue goes into the triangular hole and the left statue goes into the circular hole. It is very important that the statues' paths do not cross each other while you are moving them, so use Amiti's "Insight" skill to find the correct pattern.
Enter the door that opens. This will take you to the Sagittarius room, the final room of the temple.