Finding the Fourth Proportional to 1,540.62, 2,125.55 and 868.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,540.62 : 2,125.55 = 868.32 : x
2. Step 2: Convert to fraction form
   1,540.62/2,125.55 = 868.32/x
3. Step 3: Cross multiply
   1,540.62x = 2,125.55 × 868.32
4. Step 4: Simplify right side
   1,540.62x = 1,845,667.72
5. Step 5: Solve for x
   x = 1,845,667.72/1,540.62
6. Step 6: Final answer
   x = 1,198.00