Finding the Fourth Proportional to 498.88, 747.84 and 315.82

Step by Step Solution

1. Step 1: Write the proportion equation
   498.88 : 747.84 = 315.82 : x
2. Step 2: Convert to fraction form
   498.88/747.84 = 315.82/x
3. Step 3: Cross multiply
   498.88x = 747.84 × 315.82
4. Step 4: Simplify right side
   498.88x = 236,182.83
5. Step 5: Solve for x
   x = 236,182.83/498.88
6. Step 6: Final answer
   x = 473.43