Finding the Fourth Proportional to 1,052.47, 1,452.18 and 720.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,052.47 : 1,452.18 = 720.82 : x
2. Step 2: Convert to fraction form
   1,052.47/1,452.18 = 720.82/x
3. Step 3: Cross multiply
   1,052.47x = 1,452.18 × 720.82
4. Step 4: Simplify right side
   1,052.47x = 1,046,760.39
5. Step 5: Solve for x
   x = 1,046,760.39/1,052.47
6. Step 6: Final answer
   x = 994.58