Finding the Fourth Proportional to 1,078.42, 1,488.30 and 606.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.42 : 1,488.30 = 606.37 : x
2. Step 2: Convert to fraction form
   1,078.42/1,488.30 = 606.37/x
3. Step 3: Cross multiply
   1,078.42x = 1,488.30 × 606.37
4. Step 4: Simplify right side
   1,078.42x = 902,460.47
5. Step 5: Solve for x
   x = 902,460.47/1,078.42
6. Step 6: Final answer
   x = 836.84