Finding the Fourth Proportional to 1,196.46, 1,794.60 and 426.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.46 : 1,794.60 = 426.42 : x
2. Step 2: Convert to fraction form
   1,196.46/1,794.60 = 426.42/x
3. Step 3: Cross multiply
   1,196.46x = 1,794.60 × 426.42
4. Step 4: Simplify right side
   1,196.46x = 765,253.33
5. Step 5: Solve for x
   x = 765,253.33/1,196.46
6. Step 6: Final answer
   x = 639.60