Finding the Fourth Proportional to 1,524.34, 2,103.46 and 861.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,524.34 : 2,103.46 = 861.25 : x
2. Step 2: Convert to fraction form
   1,524.34/2,103.46 = 861.25/x
3. Step 3: Cross multiply
   1,524.34x = 2,103.46 × 861.25
4. Step 4: Simplify right side
   1,524.34x = 1,811,604.93
5. Step 5: Solve for x
   x = 1,811,604.93/1,524.34
6. Step 6: Final answer
   x = 1,188.46