Finding the Fourth Proportional to 2,045.36, 3,067.72 and 1,121.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.36 : 3,067.72 = 1,121.37 : x
2. Step 2: Convert to fraction form
   2,045.36/3,067.72 = 1,121.37/x
3. Step 3: Cross multiply
   2,045.36x = 3,067.72 × 1,121.37
4. Step 4: Simplify right side
   2,045.36x = 3,440,046.37
5. Step 5: Solve for x
   x = 3,440,046.37/2,045.36
6. Step 6: Final answer
   x = 1,681.88