Finding the Fourth Proportional to 1,524.48, 2,103.83 and 861.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,524.48 : 2,103.83 = 861.32 : x
2. Step 2: Convert to fraction form
   1,524.48/2,103.83 = 861.32/x
3. Step 3: Cross multiply
   1,524.48x = 2,103.83 × 861.32
4. Step 4: Simplify right side
   1,524.48x = 1,812,070.29
5. Step 5: Solve for x
   x = 1,812,070.29/1,524.48
6. Step 6: Final answer
   x = 1,188.65