Finding the Fourth Proportional to 2,459.60, 3,687.17 and 1,227.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,459.60 : 3,687.17 = 1,227.39 : x
2. Step 2: Convert to fraction form
   2,459.60/3,687.17 = 1,227.39/x
3. Step 3: Cross multiply
   2,459.60x = 3,687.17 × 1,227.39
4. Step 4: Simplify right side
   2,459.60x = 4,525,571.01
5. Step 5: Solve for x
   x = 4,525,571.01/2,459.60
6. Step 6: Final answer
   x = 1,839.97