Finding the Fourth Proportional to 498.72, 747 and 238.32

Step by Step Solution

1. Step 1: Write the proportion equation
   498.72 : 747 = 238.32 : x
2. Step 2: Convert to fraction form
   498.72/747 = 238.32/x
3. Step 3: Cross multiply
   498.72x = 747 × 238.32
4. Step 4: Simplify right side
   498.72x = 178,025.04
5. Step 5: Solve for x
   x = 178,025.04/498.72
6. Step 6: Final answer
   x = 356.96