Finding the Fourth Proportional to 1,016.64, 1,402.89 and 574.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.64 : 1,402.89 = 574.58 : x
2. Step 2: Convert to fraction form
   1,016.64/1,402.89 = 574.58/x
3. Step 3: Cross multiply
   1,016.64x = 1,402.89 × 574.58
4. Step 4: Simplify right side
   1,016.64x = 806,073.89
5. Step 5: Solve for x
   x = 806,073.89/1,016.64
6. Step 6: Final answer
   x = 792.88