Finding the Fourth Proportional to 2,105.33, 3,154.50 and 1,281.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.33 : 3,154.50 = 1,281.11 : x
2. Step 2: Convert to fraction form
   2,105.33/3,154.50 = 1,281.11/x
3. Step 3: Cross multiply
   2,105.33x = 3,154.50 × 1,281.11
4. Step 4: Simplify right side
   2,105.33x = 4,041,269.38
5. Step 5: Solve for x
   x = 4,041,269.38/2,105.33
6. Step 6: Final answer
   x = 1,919.54