Finding the Fourth Proportional to 1,078.76, 1,488.54 and 606.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.76 : 1,488.54 = 606.59 : x
2. Step 2: Convert to fraction form
   1,078.76/1,488.54 = 606.59/x
3. Step 3: Cross multiply
   1,078.76x = 1,488.54 × 606.59
4. Step 4: Simplify right side
   1,078.76x = 902,937.20
5. Step 5: Solve for x
   x = 902,937.20/1,078.76
6. Step 6: Final answer
   x = 837.01