Finding the Fourth Proportional to 1,524.17, 2,103.34 and 861.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,524.17 : 2,103.34 = 861.24 : x
2. Step 2: Convert to fraction form
   1,524.17/2,103.34 = 861.24/x
3. Step 3: Cross multiply
   1,524.17x = 2,103.34 × 861.24
4. Step 4: Simplify right side
   1,524.17x = 1,811,478.39
5. Step 5: Solve for x
   x = 1,811,478.39/1,524.17
6. Step 6: Final answer
   x = 1,188.50