Finding the Fourth Proportional to 3,688.78, 5,088.90 and 2,461.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,688.78 : 5,088.90 = 2,461.27 : x
2. Step 2: Convert to fraction form
   3,688.78/5,088.90 = 2,461.27/x
3. Step 3: Cross multiply
   3,688.78x = 5,088.90 × 2,461.27
4. Step 4: Simplify right side
   3,688.78x = 12,525,156.90
5. Step 5: Solve for x
   x = 12,525,156.90/3,688.78
6. Step 6: Final answer
   x = 3,395.47