A person is standing on the level floor. His head, upper torso, arms, and hands altogether weigh 438N and encompass a center of gravity which is 1.28m above the floor. His upper legs weigh 144N and encompass a center of gravity that is .760m above the floor. At last, his lower legs and feet altogether weigh 87N and encompass a center of gravity that is .250m above the floor. Relative to the floor, determine the location of the center of gravity for his whole body.