Finding the Fourth Proportional to 2,659.53, 3,991.41 and 1,198.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.53 : 3,991.41 = 1,198.79 : x
2. Step 2: Convert to fraction form
   2,659.53/3,991.41 = 1,198.79/x
3. Step 3: Cross multiply
   2,659.53x = 3,991.41 × 1,198.79
4. Step 4: Simplify right side
   2,659.53x = 4,784,873.69
5. Step 5: Solve for x
   x = 4,784,873.69/2,659.53
6. Step 6: Final answer
   x = 1,799.15