Finding the Fourth Proportional to 932.58, 1,287.50 and 760.05

Step by Step Solution

1. Step 1: Write the proportion equation
   932.58 : 1,287.50 = 760.05 : x
2. Step 2: Convert to fraction form
   932.58/1,287.50 = 760.05/x
3. Step 3: Cross multiply
   932.58x = 1,287.50 × 760.05
4. Step 4: Simplify right side
   932.58x = 978,560.57
5. Step 5: Solve for x
   x = 978,560.57/932.58
6. Step 6: Final answer
   x = 1,049.30