Finding the Fourth Proportional to 2,253.71, 3,109.81 and 1,258.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,253.71 : 3,109.81 = 1,258.86 : x
2. Step 2: Convert to fraction form
   2,253.71/3,109.81 = 1,258.86/x
3. Step 3: Cross multiply
   2,253.71x = 3,109.81 × 1,258.86
4. Step 4: Simplify right side
   2,253.71x = 3,914,809.12
5. Step 5: Solve for x
   x = 3,914,809.12/2,253.71
6. Step 6: Final answer
   x = 1,737.05