Finding the Fourth Proportional to 498.82, 687.92 and 359.86

Step by Step Solution

1. Step 1: Write the proportion equation
   498.82 : 687.92 = 359.86 : x
2. Step 2: Convert to fraction form
   498.82/687.92 = 359.86/x
3. Step 3: Cross multiply
   498.82x = 687.92 × 359.86
4. Step 4: Simplify right side
   498.82x = 247,554.89
5. Step 5: Solve for x
   x = 247,554.89/498.82
6. Step 6: Final answer
   x = 496.28