Finding the Fourth Proportional to 1,198.37, 1,654.35 and 800.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,198.37 : 1,654.35 = 800.69 : x
2. Step 2: Convert to fraction form
   1,198.37/1,654.35 = 800.69/x
3. Step 3: Cross multiply
   1,198.37x = 1,654.35 × 800.69
4. Step 4: Simplify right side
   1,198.37x = 1,324,621.50
5. Step 5: Solve for x
   x = 1,324,621.50/1,198.37
6. Step 6: Final answer
   x = 1,105.35