Finding the Fourth Proportional to 2,456.20, 3,681.60 and 1,069.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.20 : 3,681.60 = 1,069.30 : x
2. Step 2: Convert to fraction form
   2,456.20/3,681.60 = 1,069.30/x
3. Step 3: Cross multiply
   2,456.20x = 3,681.60 × 1,069.30
4. Step 4: Simplify right side
   2,456.20x = 3,936,734.88
5. Step 5: Solve for x
   x = 3,936,734.88/2,456.20
6. Step 6: Final answer
   x = 1,602.77