Finding the Fourth Proportional to 1,420.92, 1,960.56 and 1,028.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,420.92 : 1,960.56 = 1,028.52 : x
2. Step 2: Convert to fraction form
   1,420.92/1,960.56 = 1,028.52/x
3. Step 3: Cross multiply
   1,420.92x = 1,960.56 × 1,028.52
4. Step 4: Simplify right side
   1,420.92x = 2,016,475.17
5. Step 5: Solve for x
   x = 2,016,475.17/1,420.92
6. Step 6: Final answer
   x = 1,419.13