Finding the Fourth Proportional to 1,084.86, 1,625.94 and 499.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.86 : 1,625.94 = 499.50 : x
2. Step 2: Convert to fraction form
   1,084.86/1,625.94 = 499.50/x
3. Step 3: Cross multiply
   1,084.86x = 1,625.94 × 499.50
4. Step 4: Simplify right side
   1,084.86x = 812,157.03
5. Step 5: Solve for x
   x = 812,157.03/1,084.86
6. Step 6: Final answer
   x = 748.63