Finding the Fourth Proportional to 2,099.66, 3,146.25 and 800.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.66 : 3,146.25 = 800.42 : x
2. Step 2: Convert to fraction form
   2,099.66/3,146.25 = 800.42/x
3. Step 3: Cross multiply
   2,099.66x = 3,146.25 × 800.42
4. Step 4: Simplify right side
   2,099.66x = 2,518,321.43
5. Step 5: Solve for x
   x = 2,518,321.43/2,099.66
6. Step 6: Final answer
   x = 1,199.39