Finding the Fourth Proportional to 2,007.56, 2,770.70 and 1,123.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.56 : 2,770.70 = 1,123.43 : x
2. Step 2: Convert to fraction form
   2,007.56/2,770.70 = 1,123.43/x
3. Step 3: Cross multiply
   2,007.56x = 2,770.70 × 1,123.43
4. Step 4: Simplify right side
   2,007.56x = 3,112,668.03
5. Step 5: Solve for x
   x = 3,112,668.03/2,007.56
6. Step 6: Final answer
   x = 1,550.48