Finding the Fourth Proportional to 1,524.58, 2,103.82 and 861.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,524.58 : 2,103.82 = 861.50 : x
2. Step 2: Convert to fraction form
   1,524.58/2,103.82 = 861.50/x
3. Step 3: Cross multiply
   1,524.58x = 2,103.82 × 861.50
4. Step 4: Simplify right side
   1,524.58x = 1,812,440.93
5. Step 5: Solve for x
   x = 1,812,440.93/1,524.58
6. Step 6: Final answer
   x = 1,188.81