Finding the Fourth Proportional to 2,101.51, 3,151.52 and 868.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.51 : 3,151.52 = 868.37 : x
2. Step 2: Convert to fraction form
   2,101.51/3,151.52 = 868.37/x
3. Step 3: Cross multiply
   2,101.51x = 3,151.52 × 868.37
4. Step 4: Simplify right side
   2,101.51x = 2,736,681.08
5. Step 5: Solve for x
   x = 2,736,681.08/2,101.51
6. Step 6: Final answer
   x = 1,302.25