Finding the Fourth Proportional to 1,078.98, 1,488.96 and 606.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.98 : 1,488.96 = 606.89 : x
2. Step 2: Convert to fraction form
   1,078.98/1,488.96 = 606.89/x
3. Step 3: Cross multiply
   1,078.98x = 1,488.96 × 606.89
4. Step 4: Simplify right side
   1,078.98x = 903,627.49
5. Step 5: Solve for x
   x = 903,627.49/1,078.98
6. Step 6: Final answer
   x = 837.48