Finding the Fourth Proportional to 2,280.43, 3,147.22 and 1,286.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.43 : 3,147.22 = 1,286.02 : x
2. Step 2: Convert to fraction form
   2,280.43/3,147.22 = 1,286.02/x
3. Step 3: Cross multiply
   2,280.43x = 3,147.22 × 1,286.02
4. Step 4: Simplify right side
   2,280.43x = 4,047,387.86
5. Step 5: Solve for x
   x = 4,047,387.86/2,280.43
6. Step 6: Final answer
   x = 1,774.84