Finding the Fourth Proportional to 2,099.34, 3,149.54 and 800.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.34 : 3,149.54 = 800.10 : x
2. Step 2: Convert to fraction form
   2,099.34/3,149.54 = 800.10/x
3. Step 3: Cross multiply
   2,099.34x = 3,149.54 × 800.10
4. Step 4: Simplify right side
   2,099.34x = 2,519,946.95
5. Step 5: Solve for x
   x = 2,519,946.95/2,099.34
6. Step 6: Final answer
   x = 1,200.35