Finding the Fourth Proportional to 2,003.78, 3,007.03 and 1,127.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.78 : 3,007.03 = 1,127.61 : x
2. Step 2: Convert to fraction form
   2,003.78/3,007.03 = 1,127.61/x
3. Step 3: Cross multiply
   2,003.78x = 3,007.03 × 1,127.61
4. Step 4: Simplify right side
   2,003.78x = 3,390,757.10
5. Step 5: Solve for x
   x = 3,390,757.10/2,003.78
6. Step 6: Final answer
   x = 1,692.18