Finding the Fourth Proportional to 1,402.12, 1,934.41 and 842.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.12 : 1,934.41 = 842.38 : x
2. Step 2: Convert to fraction form
   1,402.12/1,934.41 = 842.38/x
3. Step 3: Cross multiply
   1,402.12x = 1,934.41 × 842.38
4. Step 4: Simplify right side
   1,402.12x = 1,629,508.30
5. Step 5: Solve for x
   x = 1,629,508.30/1,402.12
6. Step 6: Final answer
   x = 1,162.17