Finding the Fourth Proportional to 2,956.72, 4,434 and 1,311.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,956.72 : 4,434 = 1,311.64 : x
2. Step 2: Convert to fraction form
   2,956.72/4,434 = 1,311.64/x
3. Step 3: Cross multiply
   2,956.72x = 4,434 × 1,311.64
4. Step 4: Simplify right side
   2,956.72x = 5,815,811.76
5. Step 5: Solve for x
   x = 5,815,811.76/2,956.72
6. Step 6: Final answer
   x = 1,966.98