Finding the Fourth Proportional to 1,524.53, 2,103.89 and 861.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,524.53 : 2,103.89 = 861.37 : x
2. Step 2: Convert to fraction form
   1,524.53/2,103.89 = 861.37/x
3. Step 3: Cross multiply
   1,524.53x = 2,103.89 × 861.37
4. Step 4: Simplify right side
   1,524.53x = 1,812,224.62
5. Step 5: Solve for x
   x = 1,812,224.62/1,524.53
6. Step 6: Final answer
   x = 1,188.71