Finding the Fourth Proportional to 404.88, 607.59 and 199.59

Step by Step Solution

1. Step 1: Write the proportion equation
   404.88 : 607.59 = 199.59 : x
2. Step 2: Convert to fraction form
   404.88/607.59 = 199.59/x
3. Step 3: Cross multiply
   404.88x = 607.59 × 199.59
4. Step 4: Simplify right side
   404.88x = 121,268.89
5. Step 5: Solve for x
   x = 121,268.89/404.88
6. Step 6: Final answer
   x = 299.52