Finding the Fourth Proportional to 2,315.27, 3,470.67 and 853.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.27 : 3,470.67 = 853.62 : x
2. Step 2: Convert to fraction form
   2,315.27/3,470.67 = 853.62/x
3. Step 3: Cross multiply
   2,315.27x = 3,470.67 × 853.62
4. Step 4: Simplify right side
   2,315.27x = 2,962,633.33
5. Step 5: Solve for x
   x = 2,962,633.33/2,315.27
6. Step 6: Final answer
   x = 1,279.61