Finding the Fourth Proportional to 2,256.34, 3,382.78 and 1,069.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,256.34 : 3,382.78 = 1,069.78 : x
2. Step 2: Convert to fraction form
   2,256.34/3,382.78 = 1,069.78/x
3. Step 3: Cross multiply
   2,256.34x = 3,382.78 × 1,069.78
4. Step 4: Simplify right side
   2,256.34x = 3,618,830.39
5. Step 5: Solve for x
   x = 3,618,830.39/2,256.34
6. Step 6: Final answer
   x = 1,603.85