Finding the Fourth Proportional to 2,253.43, 3,109.74 and 1,258.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,253.43 : 3,109.74 = 1,258.71 : x
2. Step 2: Convert to fraction form
   2,253.43/3,109.74 = 1,258.71/x
3. Step 3: Cross multiply
   2,253.43x = 3,109.74 × 1,258.71
4. Step 4: Simplify right side
   2,253.43x = 3,914,260.84
5. Step 5: Solve for x
   x = 3,914,260.84/2,253.43
6. Step 6: Final answer
   x = 1,737.02