Finding the Fourth Proportional to 1,402.85, 1,936.03 and 843.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.85 : 1,936.03 = 843.31 : x
2. Step 2: Convert to fraction form
   1,402.85/1,936.03 = 843.31/x
3. Step 3: Cross multiply
   1,402.85x = 1,936.03 × 843.31
4. Step 4: Simplify right side
   1,402.85x = 1,632,673.46
5. Step 5: Solve for x
   x = 1,632,673.46/1,402.85
6. Step 6: Final answer
   x = 1,163.83