Finding the Fourth Proportional to 1,524.56, 2,103.92 and 861.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,524.56 : 2,103.92 = 861.42 : x
2. Step 2: Convert to fraction form
   1,524.56/2,103.92 = 861.42/x
3. Step 3: Cross multiply
   1,524.56x = 2,103.92 × 861.42
4. Step 4: Simplify right side
   1,524.56x = 1,812,358.77
5. Step 5: Solve for x
   x = 1,812,358.77/1,524.56
6. Step 6: Final answer
   x = 1,188.77