Finding the Fourth Proportional to 2,565.39, 3,847.47 and 716.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,565.39 : 3,847.47 = 716.57 : x
2. Step 2: Convert to fraction form
   2,565.39/3,847.47 = 716.57/x
3. Step 3: Cross multiply
   2,565.39x = 3,847.47 × 716.57
4. Step 4: Simplify right side
   2,565.39x = 2,756,962.34
5. Step 5: Solve for x
   x = 2,756,962.34/2,565.39
6. Step 6: Final answer
   x = 1,074.68