Finding the Fourth Proportional to 498.83, 748.25 and 238.94

Step by Step Solution

1. Step 1: Write the proportion equation
   498.83 : 748.25 = 238.94 : x
2. Step 2: Convert to fraction form
   498.83/748.25 = 238.94/x
3. Step 3: Cross multiply
   498.83x = 748.25 × 238.94
4. Step 4: Simplify right side
   498.83x = 178,781.92
5. Step 5: Solve for x
   x = 178,781.92/498.83
6. Step 6: Final answer
   x = 358.41