Finding the Fourth Proportional to 498.47, 748.52 and 307.31

Step by Step Solution

1. Step 1: Write the proportion equation
   498.47 : 748.52 = 307.31 : x
2. Step 2: Convert to fraction form
   498.47/748.52 = 307.31/x
3. Step 3: Cross multiply
   498.47x = 748.52 × 307.31
4. Step 4: Simplify right side
   498.47x = 230,026.14
5. Step 5: Solve for x
   x = 230,026.14/498.47
6. Step 6: Final answer
   x = 461.46