Finding the Fourth Proportional to 3,906.50, 5,391.61 and 2,251.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906.50 : 5,391.61 = 2,251.46 : x
2. Step 2: Convert to fraction form
   3,906.50/5,391.61 = 2,251.46/x
3. Step 3: Cross multiply
   3,906.50x = 5,391.61 × 2,251.46
4. Step 4: Simplify right side
   3,906.50x = 12,138,994.25
5. Step 5: Solve for x
   x = 12,138,994.25/3,906.50
6. Step 6: Final answer
   x = 3,107.38