Finding the Fourth Proportional to 1,078.38, 1,488.27 and 606.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.38 : 1,488.27 = 606.36 : x
2. Step 2: Convert to fraction form
   1,078.38/1,488.27 = 606.36/x
3. Step 3: Cross multiply
   1,078.38x = 1,488.27 × 606.36
4. Step 4: Simplify right side
   1,078.38x = 902,427.40
5. Step 5: Solve for x
   x = 902,427.40/1,078.38
6. Step 6: Final answer
   x = 836.84