Finding the Fourth Proportional to 1,016.72, 1,403.13 and 574.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.72 : 1,403.13 = 574.62 : x
2. Step 2: Convert to fraction form
   1,016.72/1,403.13 = 574.62/x
3. Step 3: Cross multiply
   1,016.72x = 1,403.13 × 574.62
4. Step 4: Simplify right side
   1,016.72x = 806,266.56
5. Step 5: Solve for x
   x = 806,266.56/1,016.72
6. Step 6: Final answer
   x = 793.01