Finding the Fourth Proportional to 1,016.38, 1,402.72 and 574.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.38 : 1,402.72 = 574.43 : x
2. Step 2: Convert to fraction form
   1,016.38/1,402.72 = 574.43/x
3. Step 3: Cross multiply
   1,016.38x = 1,402.72 × 574.43
4. Step 4: Simplify right side
   1,016.38x = 805,756.00
5. Step 5: Solve for x
   x = 805,756.00/1,016.38
6. Step 6: Final answer
   x = 792.77