Finding the Fourth Proportional to 2,306.31, 3,182.42 and 1,311.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,306.31 : 3,182.42 = 1,311.42 : x
2. Step 2: Convert to fraction form
   2,306.31/3,182.42 = 1,311.42/x
3. Step 3: Cross multiply
   2,306.31x = 3,182.42 × 1,311.42
4. Step 4: Simplify right side
   2,306.31x = 4,173,504.45
5. Step 5: Solve for x
   x = 4,173,504.45/2,306.31
6. Step 6: Final answer
   x = 1,809.61