Finding the Fourth Proportional to 1,016.29, 1,402.50 and 574.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.29 : 1,402.50 = 574.21 : x
2. Step 2: Convert to fraction form
   1,016.29/1,402.50 = 574.21/x
3. Step 3: Cross multiply
   1,016.29x = 1,402.50 × 574.21
4. Step 4: Simplify right side
   1,016.29x = 805,329.53
5. Step 5: Solve for x
   x = 805,329.53/1,016.29
6. Step 6: Final answer
   x = 792.42