Finding the Fourth Proportional to 1,512.56, 2,268.36 and 1,028.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,512.56 : 2,268.36 = 1,028.72 : x
2. Step 2: Convert to fraction form
   1,512.56/2,268.36 = 1,028.72/x
3. Step 3: Cross multiply
   1,512.56x = 2,268.36 × 1,028.72
4. Step 4: Simplify right side
   1,512.56x = 2,333,507.30
5. Step 5: Solve for x
   x = 2,333,507.30/1,512.56
6. Step 6: Final answer
   x = 1,542.75