Finding the Fourth Proportional to 2,100.34, 3,151.17 and 868.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.34 : 3,151.17 = 868.33 : x
2. Step 2: Convert to fraction form
   2,100.34/3,151.17 = 868.33/x
3. Step 3: Cross multiply
   2,100.34x = 3,151.17 × 868.33
4. Step 4: Simplify right side
   2,100.34x = 2,736,259.39
5. Step 5: Solve for x
   x = 2,736,259.39/2,100.34
6. Step 6: Final answer
   x = 1,302.77