Finding the Fourth Proportional to 2,142.11, 2,956.02 and 1,258.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.11 : 2,956.02 = 1,258.01 : x
2. Step 2: Convert to fraction form
   2,142.11/2,956.02 = 1,258.01/x
3. Step 3: Cross multiply
   2,142.11x = 2,956.02 × 1,258.01
4. Step 4: Simplify right side
   2,142.11x = 3,718,702.72
5. Step 5: Solve for x
   x = 3,718,702.72/2,142.11
6. Step 6: Final answer
   x = 1,736.00