Finding the Fourth Proportional to 1,196.43, 1,794.83 and 426.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.43 : 1,794.83 = 426.75 : x
2. Step 2: Convert to fraction form
   1,196.43/1,794.83 = 426.75/x
3. Step 3: Cross multiply
   1,196.43x = 1,794.83 × 426.75
4. Step 4: Simplify right side
   1,196.43x = 765,941.57
5. Step 5: Solve for x
   x = 765,941.57/1,196.43
6. Step 6: Final answer
   x = 640.19