Finding the Fourth Proportional to 2,007.70, 2,770.56 and 1,123.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.70 : 2,770.56 = 1,123.44 : x
2. Step 2: Convert to fraction form
   2,007.70/2,770.56 = 1,123.44/x
3. Step 3: Cross multiply
   2,007.70x = 2,770.56 × 1,123.44
4. Step 4: Simplify right side
   2,007.70x = 3,112,557.93
5. Step 5: Solve for x
   x = 3,112,557.93/2,007.70
6. Step 6: Final answer
   x = 1,550.31