Finding the Fourth Proportional to 3,109.16, 4,662.62 and 1,028.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.16 : 4,662.62 = 1,028.78 : x
2. Step 2: Convert to fraction form
   3,109.16/4,662.62 = 1,028.78/x
3. Step 3: Cross multiply
   3,109.16x = 4,662.62 × 1,028.78
4. Step 4: Simplify right side
   3,109.16x = 4,796,810.20
5. Step 5: Solve for x
   x = 4,796,810.20/3,109.16
6. Step 6: Final answer
   x = 1,542.80