Finding the Fourth Proportional to 2,314.39, 3,469.95 and 853.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,314.39 : 3,469.95 = 853.35 : x
2. Step 2: Convert to fraction form
   2,314.39/3,469.95 = 853.35/x
3. Step 3: Cross multiply
   2,314.39x = 3,469.95 × 853.35
4. Step 4: Simplify right side
   2,314.39x = 2,961,081.83
5. Step 5: Solve for x
   x = 2,961,081.83/2,314.39
6. Step 6: Final answer
   x = 1,279.42