Finding the Fourth Proportional to 1,524.37, 2,103.61 and 861.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,524.37 : 2,103.61 = 861.43 : x
2. Step 2: Convert to fraction form
   1,524.37/2,103.61 = 861.43/x
3. Step 3: Cross multiply
   1,524.37x = 2,103.61 × 861.43
4. Step 4: Simplify right side
   1,524.37x = 1,812,112.76
5. Step 5: Solve for x
   x = 1,812,112.76/1,524.37
6. Step 6: Final answer
   x = 1,188.76