Finding the Fourth Proportional to 2,105.46, 3,158.37 and 1,283.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.46 : 3,158.37 = 1,283.31 : x
2. Step 2: Convert to fraction form
   2,105.46/3,158.37 = 1,283.31/x
3. Step 3: Cross multiply
   2,105.46x = 3,158.37 × 1,283.31
4. Step 4: Simplify right side
   2,105.46x = 4,053,167.80
5. Step 5: Solve for x
   x = 4,053,167.80/2,105.46
6. Step 6: Final answer
   x = 1,925.07