Finding the Fourth Proportional to 2,757.72, 3,811.11 and 2,259.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,757.72 : 3,811.11 = 2,259.57 : x
2. Step 2: Convert to fraction form
   2,757.72/3,811.11 = 2,259.57/x
3. Step 3: Cross multiply
   2,757.72x = 3,811.11 × 2,259.57
4. Step 4: Simplify right side
   2,757.72x = 8,611,469.82
5. Step 5: Solve for x
   x = 8,611,469.82/2,757.72
6. Step 6: Final answer
   x = 3,122.68