Finding the Fourth Proportional to 1,560.88, 2,154.33 and 1,028.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,560.88 : 2,154.33 = 1,028.83 : x
2. Step 2: Convert to fraction form
   1,560.88/2,154.33 = 1,028.83/x
3. Step 3: Cross multiply
   1,560.88x = 2,154.33 × 1,028.83
4. Step 4: Simplify right side
   1,560.88x = 2,216,439.33
5. Step 5: Solve for x
   x = 2,216,439.33/1,560.88
6. Step 6: Final answer
   x = 1,419.99