Finding the Fourth Proportional to 2,105.11, 3,154.15 and 1,487.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.11 : 3,154.15 = 1,487.49 : x
2. Step 2: Convert to fraction form
   2,105.11/3,154.15 = 1,487.49/x
3. Step 3: Cross multiply
   2,105.11x = 3,154.15 × 1,487.49
4. Step 4: Simplify right side
   2,105.11x = 4,691,766.58
5. Step 5: Solve for x
   x = 4,691,766.58/2,105.11
6. Step 6: Final answer
   x = 2,228.75