Finding the Fourth Proportional to 2,882.45, 3,978.30 and 2,260.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,882.45 : 3,978.30 = 2,260.37 : x
2. Step 2: Convert to fraction form
   2,882.45/3,978.30 = 2,260.37/x
3. Step 3: Cross multiply
   2,882.45x = 3,978.30 × 2,260.37
4. Step 4: Simplify right side
   2,882.45x = 8,992,398.78
5. Step 5: Solve for x
   x = 8,992,398.78/2,882.45
6. Step 6: Final answer
   x = 3,119.71