Using the thin-lens equations and measured experimental values for object position and height, lens 1 position, image 1 position and height, lens 2

Using the thin-lens equations and measured experimental values for object position and height, lens 1 position, image 1 position and height, lens 2 position, and final image an height, how can I calculate the focal length of each of the lenses and the height and position of the final image?