Finding the Fourth Proportional to 1,582.82, 2,372.79 and 716.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,582.82 : 2,372.79 = 716.78 : x
2. Step 2: Convert to fraction form
   1,582.82/2,372.79 = 716.78/x
3. Step 3: Cross multiply
   1,582.82x = 2,372.79 × 716.78
4. Step 4: Simplify right side
   1,582.82x = 1,700,768.42
5. Step 5: Solve for x
   x = 1,700,768.42/1,582.82
6. Step 6: Final answer
   x = 1,074.52