Finding the Fourth Proportional to 1,016.34, 1,402.55 and 574.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.34 : 1,402.55 = 574.39 : x
2. Step 2: Convert to fraction form
   1,016.34/1,402.55 = 574.39/x
3. Step 3: Cross multiply
   1,016.34x = 1,402.55 × 574.39
4. Step 4: Simplify right side
   1,016.34x = 805,610.69
5. Step 5: Solve for x
   x = 805,610.69/1,016.34
6. Step 6: Final answer
   x = 792.66