Finding the Fourth Proportional to 2,099.18, 3,149.17 and 800.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.18 : 3,149.17 = 800.54 : x
2. Step 2: Convert to fraction form
   2,099.18/3,149.17 = 800.54/x
3. Step 3: Cross multiply
   2,099.18x = 3,149.17 × 800.54
4. Step 4: Simplify right side
   2,099.18x = 2,521,036.55
5. Step 5: Solve for x
   x = 2,521,036.55/2,099.18
6. Step 6: Final answer
   x = 1,200.96