Finding the Fourth Proportional to 2,255.09, 3,379.59 and 1,330.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.09 : 3,379.59 = 1,330.47 : x
2. Step 2: Convert to fraction form
   2,255.09/3,379.59 = 1,330.47/x
3. Step 3: Cross multiply
   2,255.09x = 3,379.59 × 1,330.47
4. Step 4: Simplify right side
   2,255.09x = 4,496,443.11
5. Step 5: Solve for x
   x = 4,496,443.11/2,255.09
6. Step 6: Final answer
   x = 1,993.91