Finding the Fourth Proportional to 1,366.89, 1,885.91 and 843.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.89 : 1,885.91 = 843.09 : x
2. Step 2: Convert to fraction form
   1,366.89/1,885.91 = 843.09/x
3. Step 3: Cross multiply
   1,366.89x = 1,885.91 × 843.09
4. Step 4: Simplify right side
   1,366.89x = 1,589,991.86
5. Step 5: Solve for x
   x = 1,589,991.86/1,366.89
6. Step 6: Final answer
   x = 1,163.22