Finding the Fourth Proportional to 2,123.56, 3,185.58 and 1,028.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.56 : 3,185.58 = 1,028.44 : x
2. Step 2: Convert to fraction form
   2,123.56/3,185.58 = 1,028.44/x
3. Step 3: Cross multiply
   2,123.56x = 3,185.58 × 1,028.44
4. Step 4: Simplify right side
   2,123.56x = 3,276,177.90
5. Step 5: Solve for x
   x = 3,276,177.90/2,123.56
6. Step 6: Final answer
   x = 1,542.78