Finding the Fourth Proportional to 2,928.82, 4,040.61 and 2,089.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,928.82 : 4,040.61 = 2,089.30 : x
2. Step 2: Convert to fraction form
   2,928.82/4,040.61 = 2,089.30/x
3. Step 3: Cross multiply
   2,928.82x = 4,040.61 × 2,089.30
4. Step 4: Simplify right side
   2,928.82x = 8,442,046.47
5. Step 5: Solve for x
   x = 8,442,046.47/2,928.82
6. Step 6: Final answer
   x = 2,882.41