Finding the Fourth Proportional to 2,142.43, 2,956.52 and 1,258.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.43 : 2,956.52 = 1,258.06 : x
2. Step 2: Convert to fraction form
   2,142.43/2,956.52 = 1,258.06/x
3. Step 3: Cross multiply
   2,142.43x = 2,956.52 × 1,258.06
4. Step 4: Simplify right side
   2,142.43x = 3,719,475.31
5. Step 5: Solve for x
   x = 3,719,475.31/2,142.43
6. Step 6: Final answer
   x = 1,736.10