Finding the Fourth Proportional to 3,911.05, 5,391.50 and 2,582.45

Step by Step Solution

1. Step 1: Write the proportion equation
   3,911.05 : 5,391.50 = 2,582.45 : x
2. Step 2: Convert to fraction form
   3,911.05/5,391.50 = 2,582.45/x
3. Step 3: Cross multiply
   3,911.05x = 5,391.50 × 2,582.45
4. Step 4: Simplify right side
   3,911.05x = 13,923,259.52
5. Step 5: Solve for x
   x = 13,923,259.52/3,911.05
6. Step 6: Final answer
   x = 3,559.98