Finding the Fourth Proportional to 2,280.50, 3,147.90 and 1,349

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.50 : 3,147.90 = 1,349 : x
2. Step 2: Convert to fraction form
   2,280.50/3,147.90 = 1,349/x
3. Step 3: Cross multiply
   2,280.50x = 3,147.90 × 1,349
4. Step 4: Simplify right side
   2,280.50x = 4,246,517.10
5. Step 5: Solve for x
   x = 4,246,517.10/2,280.50
6. Step 6: Final answer
   x = 1,862.10