Finding the Fourth Proportional to 2,713.97, 4,071.72 and 865.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,713.97 : 4,071.72 = 865.22 : x
2. Step 2: Convert to fraction form
   2,713.97/4,071.72 = 865.22/x
3. Step 3: Cross multiply
   2,713.97x = 4,071.72 × 865.22
4. Step 4: Simplify right side
   2,713.97x = 3,522,933.58
5. Step 5: Solve for x
   x = 3,522,933.58/2,713.97
6. Step 6: Final answer
   x = 1,298.07