Finding the Fourth Proportional to 1,403.09, 1,936.03 and 843.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.09 : 1,936.03 = 843.42 : x
2. Step 2: Convert to fraction form
   1,403.09/1,936.03 = 843.42/x
3. Step 3: Cross multiply
   1,403.09x = 1,936.03 × 843.42
4. Step 4: Simplify right side
   1,403.09x = 1,632,882.21
5. Step 5: Solve for x
   x = 1,632,882.21/1,403.09
6. Step 6: Final answer
   x = 1,163.78