Finding the Fourth Proportional to 1,097.52, 1,513.92 and 1,028.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.52 : 1,513.92 = 1,028.88 : x
2. Step 2: Convert to fraction form
   1,097.52/1,513.92 = 1,028.88/x
3. Step 3: Cross multiply
   1,097.52x = 1,513.92 × 1,028.88
4. Step 4: Simplify right side
   1,097.52x = 1,557,642.01
5. Step 5: Solve for x
   x = 1,557,642.01/1,097.52
6. Step 6: Final answer
   x = 1,419.24