Finding the Fourth Proportional to 2,101.14, 3,151.81 and 868.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.14 : 3,151.81 = 868.12 : x
2. Step 2: Convert to fraction form
   2,101.14/3,151.81 = 868.12/x
3. Step 3: Cross multiply
   2,101.14x = 3,151.81 × 868.12
4. Step 4: Simplify right side
   2,101.14x = 2,736,142.50
5. Step 5: Solve for x
   x = 2,736,142.50/2,101.14
6. Step 6: Final answer
   x = 1,302.22