Finding the Fourth Proportional to 2,757.56, 4,131.92 and 2,477.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,757.56 : 4,131.92 = 2,477.80 : x
2. Step 2: Convert to fraction form
   2,757.56/4,131.92 = 2,477.80/x
3. Step 3: Cross multiply
   2,757.56x = 4,131.92 × 2,477.80
4. Step 4: Simplify right side
   2,757.56x = 10,238,071.38
5. Step 5: Solve for x
   x = 10,238,071.38/2,757.56
6. Step 6: Final answer
   x = 3,712.73