Finding the Fourth Proportional to 2,697.60, 4,018.55 and 2,616.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,697.60 : 4,018.55 = 2,616.02 : x
2. Step 2: Convert to fraction form
   2,697.60/4,018.55 = 2,616.02/x
3. Step 3: Cross multiply
   2,697.60x = 4,018.55 × 2,616.02
4. Step 4: Simplify right side
   2,697.60x = 10,512,607.17
5. Step 5: Solve for x
   x = 10,512,607.17/2,697.60
6. Step 6: Final answer
   x = 3,897.02