Finding the Fourth Proportional to 1,078.69, 1,488.16 and 606.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.69 : 1,488.16 = 606.47 : x
2. Step 2: Convert to fraction form
   1,078.69/1,488.16 = 606.47/x
3. Step 3: Cross multiply
   1,078.69x = 1,488.16 × 606.47
4. Step 4: Simplify right side
   1,078.69x = 902,524.40
5. Step 5: Solve for x
   x = 902,524.40/1,078.69
6. Step 6: Final answer
   x = 836.69