Finding the Fourth Proportional to 2,039.06, 3,058.72 and 868.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.06 : 3,058.72 = 868.40 : x
2. Step 2: Convert to fraction form
   2,039.06/3,058.72 = 868.40/x
3. Step 3: Cross multiply
   2,039.06x = 3,058.72 × 868.40
4. Step 4: Simplify right side
   2,039.06x = 2,656,192.45
5. Step 5: Solve for x
   x = 2,656,192.45/2,039.06
6. Step 6: Final answer
   x = 1,302.66