Finding the Fourth Proportional to 2,723.72, 4,085.63 and 775.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,723.72 : 4,085.63 = 775.98 : x
2. Step 2: Convert to fraction form
   2,723.72/4,085.63 = 775.98/x
3. Step 3: Cross multiply
   2,723.72x = 4,085.63 × 775.98
4. Step 4: Simplify right side
   2,723.72x = 3,170,363.29
5. Step 5: Solve for x
   x = 3,170,363.29/2,723.72
6. Step 6: Final answer
   x = 1,163.98