Finding the Fourth Proportional to 1,078.41, 1,488.20 and 606.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.41 : 1,488.20 = 606.30 : x
2. Step 2: Convert to fraction form
   1,078.41/1,488.20 = 606.30/x
3. Step 3: Cross multiply
   1,078.41x = 1,488.20 × 606.30
4. Step 4: Simplify right side
   1,078.41x = 902,300.48
5. Step 5: Solve for x
   x = 902,300.48/1,078.41
6. Step 6: Final answer
   x = 836.70