Finding the Fourth Proportional to 2,007.74, 2,770.47 and 1,123.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.74 : 2,770.47 = 1,123.43 : x
2. Step 2: Convert to fraction form
   2,007.74/2,770.47 = 1,123.43/x
3. Step 3: Cross multiply
   2,007.74x = 2,770.47 × 1,123.43
4. Step 4: Simplify right side
   2,007.74x = 3,112,415.26
5. Step 5: Solve for x
   x = 3,112,415.26/2,007.74
6. Step 6: Final answer
   x = 1,550.21