Finding the Fourth Proportional to 2,724.47, 4,088.89 and 1,408.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,724.47 : 4,088.89 = 1,408.61 : x
2. Step 2: Convert to fraction form
   2,724.47/4,088.89 = 1,408.61/x
3. Step 3: Cross multiply
   2,724.47x = 4,088.89 × 1,408.61
4. Step 4: Simplify right side
   2,724.47x = 5,759,644.64
5. Step 5: Solve for x
   x = 5,759,644.64/2,724.47
6. Step 6: Final answer
   x = 2,114.04