Finding the Fourth Proportional to 2,225.56, 3,069.76 and 1,439.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.56 : 3,069.76 = 1,439.40 : x
2. Step 2: Convert to fraction form
   2,225.56/3,069.76 = 1,439.40/x
3. Step 3: Cross multiply
   2,225.56x = 3,069.76 × 1,439.40
4. Step 4: Simplify right side
   2,225.56x = 4,418,612.54
5. Step 5: Solve for x
   x = 4,418,612.54/2,225.56
6. Step 6: Final answer
   x = 1,985.39