Finding the Fourth Proportional to 2,255.81, 3,112.17 and 1,371.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.81 : 3,112.17 = 1,371.29 : x
2. Step 2: Convert to fraction form
   2,255.81/3,112.17 = 1,371.29/x
3. Step 3: Cross multiply
   2,255.81x = 3,112.17 × 1,371.29
4. Step 4: Simplify right side
   2,255.81x = 4,267,687.60
5. Step 5: Solve for x
   x = 4,267,687.60/2,255.81
6. Step 6: Final answer
   x = 1,891.86