Finding the Fourth Proportional to 498.53, 746.58 and 411.33

Step by Step Solution

1. Step 1: Write the proportion equation
   498.53 : 746.58 = 411.33 : x
2. Step 2: Convert to fraction form
   498.53/746.58 = 411.33/x
3. Step 3: Cross multiply
   498.53x = 746.58 × 411.33
4. Step 4: Simplify right side
   498.53x = 307,088.69
5. Step 5: Solve for x
   x = 307,088.69/498.53
6. Step 6: Final answer
   x = 615.99