Finding the Fourth Proportional to 2,142.32, 2,956.56 and 2,074.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.32 : 2,956.56 = 2,074.28 : x
2. Step 2: Convert to fraction form
   2,142.32/2,956.56 = 2,074.28/x
3. Step 3: Cross multiply
   2,142.32x = 2,956.56 × 2,074.28
4. Step 4: Simplify right side
   2,142.32x = 6,132,733.28
5. Step 5: Solve for x
   x = 6,132,733.28/2,142.32
6. Step 6: Final answer
   x = 2,862.66