Finding the Fourth Proportional to 2,255.69, 3,378.39 and 1,559.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.69 : 3,378.39 = 1,559.21 : x
2. Step 2: Convert to fraction form
   2,255.69/3,378.39 = 1,559.21/x
3. Step 3: Cross multiply
   2,255.69x = 3,378.39 × 1,559.21
4. Step 4: Simplify right side
   2,255.69x = 5,267,602.58
5. Step 5: Solve for x
   x = 5,267,602.58/2,255.69
6. Step 6: Final answer
   x = 2,335.26