Finding the Fourth Proportional to 2,224.46, 3,069.76 and 1,280.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,224.46 : 3,069.76 = 1,280.31 : x
2. Step 2: Convert to fraction form
   2,224.46/3,069.76 = 1,280.31/x
3. Step 3: Cross multiply
   2,224.46x = 3,069.76 × 1,280.31
4. Step 4: Simplify right side
   2,224.46x = 3,930,244.43
5. Step 5: Solve for x
   x = 3,930,244.43/2,224.46
6. Step 6: Final answer
   x = 1,766.83