Finding the Fourth Proportional to 2,101.95, 3,151.71 and 868.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.95 : 3,151.71 = 868.32 : x
2. Step 2: Convert to fraction form
   2,101.95/3,151.71 = 868.32/x
3. Step 3: Cross multiply
   2,101.95x = 3,151.71 × 868.32
4. Step 4: Simplify right side
   2,101.95x = 2,736,692.83
5. Step 5: Solve for x
   x = 2,736,692.83/2,101.95
6. Step 6: Final answer
   x = 1,301.98