Finding the Fourth Proportional to 2,019.56, 2,787.08 and 1,123.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.56 : 2,787.08 = 1,123.28 : x
2. Step 2: Convert to fraction form
   2,019.56/2,787.08 = 1,123.28/x
3. Step 3: Cross multiply
   2,019.56x = 2,787.08 × 1,123.28
4. Step 4: Simplify right side
   2,019.56x = 3,130,671.22
5. Step 5: Solve for x
   x = 3,130,671.22/2,019.56
6. Step 6: Final answer
   x = 1,550.17