Finding the Fourth Proportional to 2,046.78, 2,824.56 and 1,115.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,046.78 : 2,824.56 = 1,115.28 : x
2. Step 2: Convert to fraction form
   2,046.78/2,824.56 = 1,115.28/x
3. Step 3: Cross multiply
   2,046.78x = 2,824.56 × 1,115.28
4. Step 4: Simplify right side
   2,046.78x = 3,150,175.28
5. Step 5: Solve for x
   x = 3,150,175.28/2,046.78
6. Step 6: Final answer
   x = 1,539.09