Finding the Fourth Proportional to 1,016.74, 1,402.95 and 574.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.74 : 1,402.95 = 574.57 : x
2. Step 2: Convert to fraction form
   1,016.74/1,402.95 = 574.57/x
3. Step 3: Cross multiply
   1,016.74x = 1,402.95 × 574.57
4. Step 4: Simplify right side
   1,016.74x = 806,092.98
5. Step 5: Solve for x
   x = 806,092.98/1,016.74
6. Step 6: Final answer
   x = 792.82