Finding the Fourth Proportional to 796.88, 1,196.01 and 426.98

Step by Step Solution

1. Step 1: Write the proportion equation
   796.88 : 1,196.01 = 426.98 : x
2. Step 2: Convert to fraction form
   796.88/1,196.01 = 426.98/x
3. Step 3: Cross multiply
   796.88x = 1,196.01 × 426.98
4. Step 4: Simplify right side
   796.88x = 510,666.37
5. Step 5: Solve for x
   x = 510,666.37/796.88
6. Step 6: Final answer
   x = 640.84