Finding the Fourth Proportional to 3,914.46, 5,401.89 and 2,589.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,914.46 : 5,401.89 = 2,589.10 : x
2. Step 2: Convert to fraction form
   3,914.46/5,401.89 = 2,589.10/x
3. Step 3: Cross multiply
   3,914.46x = 5,401.89 × 2,589.10
4. Step 4: Simplify right side
   3,914.46x = 13,986,019.89
5. Step 5: Solve for x
   x = 13,986,019.89/3,914.46
6. Step 6: Final answer
   x = 3,572.91