Finding the Fourth Proportional to 1,016.56, 1,402.74 and 574.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.56 : 1,402.74 = 574.38 : x
2. Step 2: Convert to fraction form
   1,016.56/1,402.74 = 574.38/x
3. Step 3: Cross multiply
   1,016.56x = 1,402.74 × 574.38
4. Step 4: Simplify right side
   1,016.56x = 805,705.80
5. Step 5: Solve for x
   x = 805,705.80/1,016.56
6. Step 6: Final answer
   x = 792.58