Finding the Fourth Proportional to 2,506.40, 3,759.55 and 862.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,506.40 : 3,759.55 = 862.91 : x
2. Step 2: Convert to fraction form
   2,506.40/3,759.55 = 862.91/x
3. Step 3: Cross multiply
   2,506.40x = 3,759.55 × 862.91
4. Step 4: Simplify right side
   2,506.40x = 3,244,144.79
5. Step 5: Solve for x
   x = 3,244,144.79/2,506.40
6. Step 6: Final answer
   x = 1,294.35