Finding the Fourth Proportional to 1,016.68, 1,402.90 and 574.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.68 : 1,402.90 = 574.57 : x
2. Step 2: Convert to fraction form
   1,016.68/1,402.90 = 574.57/x
3. Step 3: Cross multiply
   1,016.68x = 1,402.90 × 574.57
4. Step 4: Simplify right side
   1,016.68x = 806,064.25
5. Step 5: Solve for x
   x = 806,064.25/1,016.68
6. Step 6: Final answer
   x = 792.84