Finding the Fourth Proportional to 1,196.06, 1,794.33 and 426.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.06 : 1,794.33 = 426.54 : x
2. Step 2: Convert to fraction form
   1,196.06/1,794.33 = 426.54/x
3. Step 3: Cross multiply
   1,196.06x = 1,794.33 × 426.54
4. Step 4: Simplify right side
   1,196.06x = 765,353.52
5. Step 5: Solve for x
   x = 765,353.52/1,196.06
6. Step 6: Final answer
   x = 639.90