Finding the Fourth Proportional to 2,676.50, 4,014.96 and 728.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,676.50 : 4,014.96 = 728.78 : x
2. Step 2: Convert to fraction form
   2,676.50/4,014.96 = 728.78/x
3. Step 3: Cross multiply
   2,676.50x = 4,014.96 × 728.78
4. Step 4: Simplify right side
   2,676.50x = 2,926,022.55
5. Step 5: Solve for x
   x = 2,926,022.55/2,676.50
6. Step 6: Final answer
   x = 1,093.23