Finding the Fourth Proportional to 3,958.98, 5,463.48 and 2,280.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,958.98 : 5,463.48 = 2,280.79 : x
2. Step 2: Convert to fraction form
   3,958.98/5,463.48 = 2,280.79/x
3. Step 3: Cross multiply
   3,958.98x = 5,463.48 × 2,280.79
4. Step 4: Simplify right side
   3,958.98x = 12,461,050.55
5. Step 5: Solve for x
   x = 12,461,050.55/3,958.98
6. Step 6: Final answer
   x = 3,147.54