Finding the Fourth Proportional to 2,723.35, 4,085.63 and 775.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,723.35 : 4,085.63 = 775.57 : x
2. Step 2: Convert to fraction form
   2,723.35/4,085.63 = 775.57/x
3. Step 3: Cross multiply
   2,723.35x = 4,085.63 × 775.57
4. Step 4: Simplify right side
   2,723.35x = 3,168,692.06
5. Step 5: Solve for x
   x = 3,168,692.06/2,723.35
6. Step 6: Final answer
   x = 1,163.53