Finding the Fourth Proportional to 2,029.78, 2,801.10 and 1,098.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,029.78 : 2,801.10 = 1,098.28 : x
2. Step 2: Convert to fraction form
   2,029.78/2,801.10 = 1,098.28/x
3. Step 3: Cross multiply
   2,029.78x = 2,801.10 × 1,098.28
4. Step 4: Simplify right side
   2,029.78x = 3,076,399.73
5. Step 5: Solve for x
   x = 3,076,399.73/2,029.78
6. Step 6: Final answer
   x = 1,515.63