Finding the Fourth Proportional to 2,280.43, 3,147.56 and 1,348.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.43 : 3,147.56 = 1,348.75 : x
2. Step 2: Convert to fraction form
   2,280.43/3,147.56 = 1,348.75/x
3. Step 3: Cross multiply
   2,280.43x = 3,147.56 × 1,348.75
4. Step 4: Simplify right side
   2,280.43x = 4,245,271.55
5. Step 5: Solve for x
   x = 4,245,271.55/2,280.43
6. Step 6: Final answer
   x = 1,861.61