Finding the Fourth Proportional to 2,862.40, 3,920.52 and 2,694.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,862.40 : 3,920.52 = 2,694.28 : x
2. Step 2: Convert to fraction form
   2,862.40/3,920.52 = 2,694.28/x
3. Step 3: Cross multiply
   2,862.40x = 3,920.52 × 2,694.28
4. Step 4: Simplify right side
   2,862.40x = 10,562,978.63
5. Step 5: Solve for x
   x = 10,562,978.63/2,862.40
6. Step 6: Final answer
   x = 3,690.25