Finding the Fourth Proportional to 498.87, 748.33 and 152.18

Step by Step Solution

1. Step 1: Write the proportion equation
   498.87 : 748.33 = 152.18 : x
2. Step 2: Convert to fraction form
   498.87/748.33 = 152.18/x
3. Step 3: Cross multiply
   498.87x = 748.33 × 152.18
4. Step 4: Simplify right side
   498.87x = 113,879.33
5. Step 5: Solve for x
   x = 113,879.33/498.87
6. Step 6: Final answer
   x = 228.27