Finding the Fourth Proportional to 2,042.78, 2,819.01 and 1,111.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.78 : 2,819.01 = 1,111.28 : x
2. Step 2: Convert to fraction form
   2,042.78/2,819.01 = 1,111.28/x
3. Step 3: Cross multiply
   2,042.78x = 2,819.01 × 1,111.28
4. Step 4: Simplify right side
   2,042.78x = 3,132,709.43
5. Step 5: Solve for x
   x = 3,132,709.43/2,042.78
6. Step 6: Final answer
   x = 1,533.55