Finding the Fourth Proportional to 498.84, 747.72 and 224.55

Step by Step Solution

1. Step 1: Write the proportion equation
   498.84 : 747.72 = 224.55 : x
2. Step 2: Convert to fraction form
   498.84/747.72 = 224.55/x
3. Step 3: Cross multiply
   498.84x = 747.72 × 224.55
4. Step 4: Simplify right side
   498.84x = 167,900.53
5. Step 5: Solve for x
   x = 167,900.53/498.84
6. Step 6: Final answer
   x = 336.58