Finding the Fourth Proportional to 2,877.76, 4,315.58 and 1,028.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,877.76 : 4,315.58 = 1,028.37 : x
2. Step 2: Convert to fraction form
   2,877.76/4,315.58 = 1,028.37/x
3. Step 3: Cross multiply
   2,877.76x = 4,315.58 × 1,028.37
4. Step 4: Simplify right side
   2,877.76x = 4,438,007.86
5. Step 5: Solve for x
   x = 4,438,007.86/2,877.76
6. Step 6: Final answer
   x = 1,542.18