Finding the Fourth Proportional to 1,114.88, 1,672.12 and 498.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,114.88 : 1,672.12 = 498.47 : x
2. Step 2: Convert to fraction form
   1,114.88/1,672.12 = 498.47/x
3. Step 3: Cross multiply
   1,114.88x = 1,672.12 × 498.47
4. Step 4: Simplify right side
   1,114.88x = 833,501.66
5. Step 5: Solve for x
   x = 833,501.66/1,114.88
6. Step 6: Final answer
   x = 747.62