Finding the Fourth Proportional to 2,015.88, 3,024.49 and 1,821.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.88 : 3,024.49 = 1,821.78 : x
2. Step 2: Convert to fraction form
   2,015.88/3,024.49 = 1,821.78/x
3. Step 3: Cross multiply
   2,015.88x = 3,024.49 × 1,821.78
4. Step 4: Simplify right side
   2,015.88x = 5,509,955.39
5. Step 5: Solve for x
   x = 5,509,955.39/2,015.88
6. Step 6: Final answer
   x = 2,733.28