Finding the Fourth Proportional to 2,297.61, 3,443.91 and 1,128.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,297.61 : 3,443.91 = 1,128.42 : x
2. Step 2: Convert to fraction form
   2,297.61/3,443.91 = 1,128.42/x
3. Step 3: Cross multiply
   2,297.61x = 3,443.91 × 1,128.42
4. Step 4: Simplify right side
   2,297.61x = 3,886,176.92
5. Step 5: Solve for x
   x = 3,886,176.92/2,297.61
6. Step 6: Final answer
   x = 1,691.40