Finding the Fourth Proportional to 2,007.28, 2,769.90 and 1,123.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.28 : 2,769.90 = 1,123.17 : x
2. Step 2: Convert to fraction form
   2,007.28/2,769.90 = 1,123.17/x
3. Step 3: Cross multiply
   2,007.28x = 2,769.90 × 1,123.17
4. Step 4: Simplify right side
   2,007.28x = 3,111,053.98
5. Step 5: Solve for x
   x = 3,111,053.98/2,007.28
6. Step 6: Final answer
   x = 1,549.88