Finding the Fourth Proportional to 1,196.01, 1,794.37 and 426.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.01 : 1,794.37 = 426.57 : x
2. Step 2: Convert to fraction form
   1,196.01/1,794.37 = 426.57/x
3. Step 3: Cross multiply
   1,196.01x = 1,794.37 × 426.57
4. Step 4: Simplify right side
   1,196.01x = 765,413.31
5. Step 5: Solve for x
   x = 765,413.31/1,196.01
6. Step 6: Final answer
   x = 639.98