Finding the Fourth Proportional to 1,016.18, 1,521.83 and 552.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.18 : 1,521.83 = 552.81 : x
2. Step 2: Convert to fraction form
   1,016.18/1,521.83 = 552.81/x
3. Step 3: Cross multiply
   1,016.18x = 1,521.83 × 552.81
4. Step 4: Simplify right side
   1,016.18x = 841,284.22
5. Step 5: Solve for x
   x = 841,284.22/1,016.18
6. Step 6: Final answer
   x = 827.89