Finding the Fourth Proportional to 1,524.73, 2,104.17 and 861.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,524.73 : 2,104.17 = 861.55 : x
2. Step 2: Convert to fraction form
   1,524.73/2,104.17 = 861.55/x
3. Step 3: Cross multiply
   1,524.73x = 2,104.17 × 861.55
4. Step 4: Simplify right side
   1,524.73x = 1,812,847.66
5. Step 5: Solve for x
   x = 1,812,847.66/1,524.73
6. Step 6: Final answer
   x = 1,188.96