Finding the Fourth Proportional to 1,406.89, 1,940.59 and 868.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.89 : 1,940.59 = 868.33 : x
2. Step 2: Convert to fraction form
   1,406.89/1,940.59 = 868.33/x
3. Step 3: Cross multiply
   1,406.89x = 1,940.59 × 868.33
4. Step 4: Simplify right side
   1,406.89x = 1,685,072.51
5. Step 5: Solve for x
   x = 1,685,072.51/1,406.89
6. Step 6: Final answer
   x = 1,197.73