Finding the Fourth Proportional to 1,828.54, 2,523.42 and 1,042.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,828.54 : 2,523.42 = 1,042.78 : x
2. Step 2: Convert to fraction form
   1,828.54/2,523.42 = 1,042.78/x
3. Step 3: Cross multiply
   1,828.54x = 2,523.42 × 1,042.78
4. Step 4: Simplify right side
   1,828.54x = 2,631,371.91
5. Step 5: Solve for x
   x = 2,631,371.91/1,828.54
6. Step 6: Final answer
   x = 1,439.06