Finding the Fourth Proportional to 2,007.42, 2,770.32 and 1,123.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.42 : 2,770.32 = 1,123.21 : x
2. Step 2: Convert to fraction form
   2,007.42/2,770.32 = 1,123.21/x
3. Step 3: Cross multiply
   2,007.42x = 2,770.32 × 1,123.21
4. Step 4: Simplify right side
   2,007.42x = 3,111,651.01
5. Step 5: Solve for x
   x = 3,111,651.01/2,007.42
6. Step 6: Final answer
   x = 1,550.07