Finding the Fourth Proportional to 2,012.38, 3,016.40 and 842.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.38 : 3,016.40 = 842.08 : x
2. Step 2: Convert to fraction form
   2,012.38/3,016.40 = 842.08/x
3. Step 3: Cross multiply
   2,012.38x = 3,016.40 × 842.08
4. Step 4: Simplify right side
   2,012.38x = 2,540,030.82
5. Step 5: Solve for x
   x = 2,540,030.82/2,012.38
6. Step 6: Final answer
   x = 1,262.21