Some unpolarized light has an intensity of 1405

Subject: Physics    / General Physics
Question

Some unpolarized light has an intensity of 1405 W/m2before passing through three polarizing filters. The transmission axis of the first filter is vertical. The second filter’s transmission axis is 31.0° from vertical. The third filter’s transmission axis is 43.0° from vertical. What is the intensity of the light that emerges from the three filters? ___W/m2