Finding the Fourth Proportional to 2,142.39, 2,956.73 and 1,258.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.39 : 2,956.73 = 1,258.32 : x
2. Step 2: Convert to fraction form
   2,142.39/2,956.73 = 1,258.32/x
3. Step 3: Cross multiply
   2,142.39x = 2,956.73 × 1,258.32
4. Step 4: Simplify right side
   2,142.39x = 3,720,512.49
5. Step 5: Solve for x
   x = 3,720,512.49/2,142.39
6. Step 6: Final answer
   x = 1,736.62