Finding the Fourth Proportional to 3,958.88, 5,462.78 and 2,280.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,958.88 : 5,462.78 = 2,280.83 : x
2. Step 2: Convert to fraction form
   3,958.88/5,462.78 = 2,280.83/x
3. Step 3: Cross multiply
   3,958.88x = 5,462.78 × 2,280.83
4. Step 4: Simplify right side
   3,958.88x = 12,459,672.51
5. Step 5: Solve for x
   x = 12,459,672.51/3,958.88
6. Step 6: Final answer
   x = 3,147.27