Finding the Fourth Proportional to 2,100.44, 3,151.31 and 868.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.44 : 3,151.31 = 868.43 : x
2. Step 2: Convert to fraction form
   2,100.44/3,151.31 = 868.43/x
3. Step 3: Cross multiply
   2,100.44x = 3,151.31 × 868.43
4. Step 4: Simplify right side
   2,100.44x = 2,736,672.04
5. Step 5: Solve for x
   x = 2,736,672.04/2,100.44
6. Step 6: Final answer
   x = 1,302.91