Finding the Fourth Proportional to 1,360.06, 1,877.43 and 1,028.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.06 : 1,877.43 = 1,028.56 : x
2. Step 2: Convert to fraction form
   1,360.06/1,877.43 = 1,028.56/x
3. Step 3: Cross multiply
   1,360.06x = 1,877.43 × 1,028.56
4. Step 4: Simplify right side
   1,360.06x = 1,931,049.40
5. Step 5: Solve for x
   x = 1,931,049.40/1,360.06
6. Step 6: Final answer
   x = 1,419.83