Finding the Fourth Proportional to 2,616.49, 3,607.15 and 2,087.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,616.49 : 3,607.15 = 2,087.17 : x
2. Step 2: Convert to fraction form
   2,616.49/3,607.15 = 2,087.17/x
3. Step 3: Cross multiply
   2,616.49x = 3,607.15 × 2,087.17
4. Step 4: Simplify right side
   2,616.49x = 7,528,730.02
5. Step 5: Solve for x
   x = 7,528,730.02/2,616.49
6. Step 6: Final answer
   x = 2,877.41