Finding the Fourth Proportional to 2,877.55, 4,315.69 and 1,028.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,877.55 : 4,315.69 = 1,028.79 : x
2. Step 2: Convert to fraction form
   2,877.55/4,315.69 = 1,028.79/x
3. Step 3: Cross multiply
   2,877.55x = 4,315.69 × 1,028.79
4. Step 4: Simplify right side
   2,877.55x = 4,439,936.14
5. Step 5: Solve for x
   x = 4,439,936.14/2,877.55
6. Step 6: Final answer
   x = 1,542.96