Finding the Fourth Proportional to 2,773.62, 4,158.37 and 1,311.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,773.62 : 4,158.37 = 1,311.06 : x
2. Step 2: Convert to fraction form
   2,773.62/4,158.37 = 1,311.06/x
3. Step 3: Cross multiply
   2,773.62x = 4,158.37 × 1,311.06
4. Step 4: Simplify right side
   2,773.62x = 5,451,872.57
5. Step 5: Solve for x
   x = 5,451,872.57/2,773.62
6. Step 6: Final answer
   x = 1,965.62