Finding the Fourth Proportional to 1,040.72, 1,562.62 and 652.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.72 : 1,562.62 = 652.38 : x
2. Step 2: Convert to fraction form
   1,040.72/1,562.62 = 652.38/x
3. Step 3: Cross multiply
   1,040.72x = 1,562.62 × 652.38
4. Step 4: Simplify right side
   1,040.72x = 1,019,422.04
5. Step 5: Solve for x
   x = 1,019,422.04/1,040.72
6. Step 6: Final answer
   x = 979.54