Finding the Fourth Proportional to 2,648.52, 3,965.22 and 2,101.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.52 : 3,965.22 = 2,101.50 : x
2. Step 2: Convert to fraction form
   2,648.52/3,965.22 = 2,101.50/x
3. Step 3: Cross multiply
   2,648.52x = 3,965.22 × 2,101.50
4. Step 4: Simplify right side
   2,648.52x = 8,332,909.83
5. Step 5: Solve for x
   x = 8,332,909.83/2,648.52
6. Step 6: Final answer
   x = 3,146.25