Finding the Fourth Proportional to 3,957.98, 5,462.69 and 2,280.36

Step by Step Solution

1. Step 1: Write the proportion equation
   3,957.98 : 5,462.69 = 2,280.36 : x
2. Step 2: Convert to fraction form
   3,957.98/5,462.69 = 2,280.36/x
3. Step 3: Cross multiply
   3,957.98x = 5,462.69 × 2,280.36
4. Step 4: Simplify right side
   3,957.98x = 12,456,888.37
5. Step 5: Solve for x
   x = 12,456,888.37/3,957.98
6. Step 6: Final answer
   x = 3,147.28