Finding the Fourth Proportional to 498.05, 746.72 and 238.09

Step by Step Solution

1. Step 1: Write the proportion equation
   498.05 : 746.72 = 238.09 : x
2. Step 2: Convert to fraction form
   498.05/746.72 = 238.09/x
3. Step 3: Cross multiply
   498.05x = 746.72 × 238.09
4. Step 4: Simplify right side
   498.05x = 177,785.80
5. Step 5: Solve for x
   x = 177,785.80/498.05
6. Step 6: Final answer
   x = 356.96