Finding the Fourth Proportional to 2,306.07, 3,182.37 and 1,311.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,306.07 : 3,182.37 = 1,311.15 : x
2. Step 2: Convert to fraction form
   2,306.07/3,182.37 = 1,311.15/x
3. Step 3: Cross multiply
   2,306.07x = 3,182.37 × 1,311.15
4. Step 4: Simplify right side
   2,306.07x = 4,172,564.43
5. Step 5: Solve for x
   x = 4,172,564.43/2,306.07
6. Step 6: Final answer
   x = 1,809.38