Finding the Fourth Proportional to 1,016.57, 1,402.89 and 574.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.57 : 1,402.89 = 574.49 : x
2. Step 2: Convert to fraction form
   1,016.57/1,402.89 = 574.49/x
3. Step 3: Cross multiply
   1,016.57x = 1,402.89 × 574.49
4. Step 4: Simplify right side
   1,016.57x = 805,946.28
5. Step 5: Solve for x
   x = 805,946.28/1,016.57
6. Step 6: Final answer
   x = 792.81