Finding the Fourth Proportional to 1,114.30, 1,672.17 and 498.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,114.30 : 1,672.17 = 498.25 : x
2. Step 2: Convert to fraction form
   1,114.30/1,672.17 = 498.25/x
3. Step 3: Cross multiply
   1,114.30x = 1,672.17 × 498.25
4. Step 4: Simplify right side
   1,114.30x = 833,158.70
5. Step 5: Solve for x
   x = 833,158.70/1,114.30
6. Step 6: Final answer
   x = 747.70