Finding the Fourth Proportional to 2,280.80, 3,139.36 and 1,616.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.80 : 3,139.36 = 1,616.52 : x
2. Step 2: Convert to fraction form
   2,280.80/3,139.36 = 1,616.52/x
3. Step 3: Cross multiply
   2,280.80x = 3,139.36 × 1,616.52
4. Step 4: Simplify right side
   2,280.80x = 5,074,838.23
5. Step 5: Solve for x
   x = 5,074,838.23/2,280.80
6. Step 6: Final answer
   x = 2,225.03