Finding the Fourth Proportional to 2,280.04, 3,144.89 and 1,396.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.04 : 3,144.89 = 1,396.28 : x
2. Step 2: Convert to fraction form
   2,280.04/3,144.89 = 1,396.28/x
3. Step 3: Cross multiply
   2,280.04x = 3,144.89 × 1,396.28
4. Step 4: Simplify right side
   2,280.04x = 4,391,147.01
5. Step 5: Solve for x
   x = 4,391,147.01/2,280.04
6. Step 6: Final answer
   x = 1,925.91