Finding the Fourth Proportional to 1,360.35, 1,863.21 and 1,280.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.35 : 1,863.21 = 1,280.56 : x
2. Step 2: Convert to fraction form
   1,360.35/1,863.21 = 1,280.56/x
3. Step 3: Cross multiply
   1,360.35x = 1,863.21 × 1,280.56
4. Step 4: Simplify right side
   1,360.35x = 2,385,952.20
5. Step 5: Solve for x
   x = 2,385,952.20/1,360.35
6. Step 6: Final answer
   x = 1,753.93