Finding the Fourth Proportional to 2,865.97, 3,952.82 and 1,921.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,865.97 : 3,952.82 = 1,921.46 : x
2. Step 2: Convert to fraction form
   2,865.97/3,952.82 = 1,921.46/x
3. Step 3: Cross multiply
   2,865.97x = 3,952.82 × 1,921.46
4. Step 4: Simplify right side
   2,865.97x = 7,595,185.52
5. Step 5: Solve for x
   x = 7,595,185.52/2,865.97
6. Step 6: Final answer
   x = 2,650.13