Finding the Fourth Proportional to 2,718.42, 4,075.39 and 868.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,718.42 : 4,075.39 = 868.38 : x
2. Step 2: Convert to fraction form
   2,718.42/4,075.39 = 868.38/x
3. Step 3: Cross multiply
   2,718.42x = 4,075.39 × 868.38
4. Step 4: Simplify right side
   2,718.42x = 3,538,987.17
5. Step 5: Solve for x
   x = 3,538,987.17/2,718.42
6. Step 6: Final answer
   x = 1,301.85