Finding the Fourth Proportional to 498.69, 748.34 and 224.91

Step by Step Solution

1. Step 1: Write the proportion equation
   498.69 : 748.34 = 224.91 : x
2. Step 2: Convert to fraction form
   498.69/748.34 = 224.91/x
3. Step 3: Cross multiply
   498.69x = 748.34 × 224.91
4. Step 4: Simplify right side
   498.69x = 168,308.87
5. Step 5: Solve for x
   x = 168,308.87/498.69
6. Step 6: Final answer
   x = 337.50