Finding the Fourth Proportional to 2,747.72, 3,788.07 and 2,661.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,747.72 : 3,788.07 = 2,661.56 : x
2. Step 2: Convert to fraction form
   2,747.72/3,788.07 = 2,661.56/x
3. Step 3: Cross multiply
   2,747.72x = 3,788.07 × 2,661.56
4. Step 4: Simplify right side
   2,747.72x = 10,082,160.87
5. Step 5: Solve for x
   x = 10,082,160.87/2,747.72
6. Step 6: Final answer
   x = 3,669.28