Finding the Fourth Proportional to 2,839.64, 3,920 and 2,662.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,839.64 : 3,920 = 2,662.52 : x
2. Step 2: Convert to fraction form
   2,839.64/3,920 = 2,662.52/x
3. Step 3: Cross multiply
   2,839.64x = 3,920 × 2,662.52
4. Step 4: Simplify right side
   2,839.64x = 10,437,078.40
5. Step 5: Solve for x
   x = 10,437,078.40/2,839.64
6. Step 6: Final answer
   x = 3,675.49