Finding the Fourth Proportional to 1,016.31, 1,402.45 and 574.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.31 : 1,402.45 = 574.18 : x
2. Step 2: Convert to fraction form
   1,016.31/1,402.45 = 574.18/x
3. Step 3: Cross multiply
   1,016.31x = 1,402.45 × 574.18
4. Step 4: Simplify right side
   1,016.31x = 805,258.74
5. Step 5: Solve for x
   x = 805,258.74/1,016.31
6. Step 6: Final answer
   x = 792.34