Finding the Fourth Proportional to 1,524.69, 2,103.93 and 861.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,524.69 : 2,103.93 = 861.59 : x
2. Step 2: Convert to fraction form
   1,524.69/2,103.93 = 861.59/x
3. Step 3: Cross multiply
   1,524.69x = 2,103.93 × 861.59
4. Step 4: Simplify right side
   1,524.69x = 1,812,730.31
5. Step 5: Solve for x
   x = 1,812,730.31/1,524.69
6. Step 6: Final answer
   x = 1,188.92