Finding the Fourth Proportional to 1,524.81, 2,104.32 and 861.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,524.81 : 2,104.32 = 861.69 : x
2. Step 2: Convert to fraction form
   1,524.81/2,104.32 = 861.69/x
3. Step 3: Cross multiply
   1,524.81x = 2,104.32 × 861.69
4. Step 4: Simplify right side
   1,524.81x = 1,813,271.50
5. Step 5: Solve for x
   x = 1,813,271.50/1,524.81
6. Step 6: Final answer
   x = 1,189.18