Finding the Fourth Proportional to 801.57, 1,196.15 and 709.31

Step by Step Solution

1. Step 1: Write the proportion equation
   801.57 : 1,196.15 = 709.31 : x
2. Step 2: Convert to fraction form
   801.57/1,196.15 = 709.31/x
3. Step 3: Cross multiply
   801.57x = 1,196.15 × 709.31
4. Step 4: Simplify right side
   801.57x = 848,441.16
5. Step 5: Solve for x
   x = 848,441.16/801.57
6. Step 6: Final answer
   x = 1,058.47