Finding the Fourth Proportional to 3,906.91, 5,859.42 and 1,442.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906.91 : 5,859.42 = 1,442.89 : x
2. Step 2: Convert to fraction form
   3,906.91/5,859.42 = 1,442.89/x
3. Step 3: Cross multiply
   3,906.91x = 5,859.42 × 1,442.89
4. Step 4: Simplify right side
   3,906.91x = 8,454,498.52
5. Step 5: Solve for x
   x = 8,454,498.52/3,906.91
6. Step 6: Final answer
   x = 2,163.99