Finding the Fourth Proportional to 2,020.10, 2,787.72 and 1,123.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.10 : 2,787.72 = 1,123.81 : x
2. Step 2: Convert to fraction form
   2,020.10/2,787.72 = 1,123.81/x
3. Step 3: Cross multiply
   2,020.10x = 2,787.72 × 1,123.81
4. Step 4: Simplify right side
   2,020.10x = 3,132,848.06
5. Step 5: Solve for x
   x = 3,132,848.06/2,020.10
6. Step 6: Final answer
   x = 1,550.84