Finding the Fourth Proportional to 1,047.55, 1,571.33 and 498.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.55 : 1,571.33 = 498.07 : x
2. Step 2: Convert to fraction form
   1,047.55/1,571.33 = 498.07/x
3. Step 3: Cross multiply
   1,047.55x = 1,571.33 × 498.07
4. Step 4: Simplify right side
   1,047.55x = 782,625.91
5. Step 5: Solve for x
   x = 782,625.91/1,047.55
6. Step 6: Final answer
   x = 747.10