Finding the Fourth Proportional to 2,225.38, 3,069.98 and 1,439.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.38 : 3,069.98 = 1,439.68 : x
2. Step 2: Convert to fraction form
   2,225.38/3,069.98 = 1,439.68/x
3. Step 3: Cross multiply
   2,225.38x = 3,069.98 × 1,439.68
4. Step 4: Simplify right side
   2,225.38x = 4,419,788.81
5. Step 5: Solve for x
   x = 4,419,788.81/2,225.38
6. Step 6: Final answer
   x = 1,986.08