Finding the Fourth Proportional to 2,723.57, 4,085.49 and 775.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,723.57 : 4,085.49 = 775.91 : x
2. Step 2: Convert to fraction form
   2,723.57/4,085.49 = 775.91/x
3. Step 3: Cross multiply
   2,723.57x = 4,085.49 × 775.91
4. Step 4: Simplify right side
   2,723.57x = 3,169,972.55
5. Step 5: Solve for x
   x = 3,169,972.55/2,723.57
6. Step 6: Final answer
   x = 1,163.90