Finding the Fourth Proportional to 2,569.30, 3,854.62 and 720.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,569.30 : 3,854.62 = 720.42 : x
2. Step 2: Convert to fraction form
   2,569.30/3,854.62 = 720.42/x
3. Step 3: Cross multiply
   2,569.30x = 3,854.62 × 720.42
4. Step 4: Simplify right side
   2,569.30x = 2,776,945.34
5. Step 5: Solve for x
   x = 2,776,945.34/2,569.30
6. Step 6: Final answer
   x = 1,080.82