Finding the Fourth Proportional to 1,196.01, 1,793.73 and 426.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.01 : 1,793.73 = 426.51 : x
2. Step 2: Convert to fraction form
   1,196.01/1,793.73 = 426.51/x
3. Step 3: Cross multiply
   1,196.01x = 1,793.73 × 426.51
4. Step 4: Simplify right side
   1,196.01x = 765,043.78
5. Step 5: Solve for x
   x = 765,043.78/1,196.01
6. Step 6: Final answer
   x = 639.66