Finding the Fourth Proportional to 2,112.54, 3,153.33 and 1,863.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.54 : 3,153.33 = 1,863.15 : x
2. Step 2: Convert to fraction form
   2,112.54/3,153.33 = 1,863.15/x
3. Step 3: Cross multiply
   2,112.54x = 3,153.33 × 1,863.15
4. Step 4: Simplify right side
   2,112.54x = 5,875,139.69
5. Step 5: Solve for x
   x = 5,875,139.69/2,112.54
6. Step 6: Final answer
   x = 2,781.08