Finding the Fourth Proportional to 2,766.55, 3,821.57 and 2,569.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.55 : 3,821.57 = 2,569.72 : x
2. Step 2: Convert to fraction form
   2,766.55/3,821.57 = 2,569.72/x
3. Step 3: Cross multiply
   2,766.55x = 3,821.57 × 2,569.72
4. Step 4: Simplify right side
   2,766.55x = 9,820,364.86
5. Step 5: Solve for x
   x = 9,820,364.86/2,766.55
6. Step 6: Final answer
   x = 3,549.68