Finding the Fourth Proportional to 498.96, 748.71 and 325.89

Step by Step Solution

1. Step 1: Write the proportion equation
   498.96 : 748.71 = 325.89 : x
2. Step 2: Convert to fraction form
   498.96/748.71 = 325.89/x
3. Step 3: Cross multiply
   498.96x = 748.71 × 325.89
4. Step 4: Simplify right side
   498.96x = 243,997.10
5. Step 5: Solve for x
   x = 243,997.10/498.96
6. Step 6: Final answer
   x = 489.01