Finding the Fourth Proportional to 2,224.27, 3,069.54 and 1,439.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,224.27 : 3,069.54 = 1,439.68 : x
2. Step 2: Convert to fraction form
   2,224.27/3,069.54 = 1,439.68/x
3. Step 3: Cross multiply
   2,224.27x = 3,069.54 × 1,439.68
4. Step 4: Simplify right side
   2,224.27x = 4,419,153.43
5. Step 5: Solve for x
   x = 4,419,153.43/2,224.27
6. Step 6: Final answer
   x = 1,986.79