Finding the Fourth Proportional to 2,738.56, 3,786.42 and 2,616.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,738.56 : 3,786.42 = 2,616.16 : x
2. Step 2: Convert to fraction form
   2,738.56/3,786.42 = 2,616.16/x
3. Step 3: Cross multiply
   2,738.56x = 3,786.42 × 2,616.16
4. Step 4: Simplify right side
   2,738.56x = 9,905,883.47
5. Step 5: Solve for x
   x = 9,905,883.47/2,738.56
6. Step 6: Final answer
   x = 3,617.18