Finding the Fourth Proportional to 3,959.00, 5,463.35 and 2,280.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,959.00 : 5,463.35 = 2,280.40 : x
2. Step 2: Convert to fraction form
   3,959.00/5,463.35 = 2,280.40/x
3. Step 3: Cross multiply
   3,959.00x = 5,463.35 × 2,280.40
4. Step 4: Simplify right side
   3,959.00x = 12,458,606.83
5. Step 5: Solve for x
   x = 12,458,606.83/3,959.00
6. Step 6: Final answer
   x = 3,146.91