Finding the Fourth Proportional to 2,956.96, 4,080.72 and 1,778.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,956.96 : 4,080.72 = 1,778.56 : x
2. Step 2: Convert to fraction form
   2,956.96/4,080.72 = 1,778.56/x
3. Step 3: Cross multiply
   2,956.96x = 4,080.72 × 1,778.56
4. Step 4: Simplify right side
   2,956.96x = 7,257,805.36
5. Step 5: Solve for x
   x = 7,257,805.36/2,956.96
6. Step 6: Final answer
   x = 2,454.48