Finding the Fourth Proportional to 1,016.82, 1,526.10 and 400.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.82 : 1,526.10 = 400.96 : x
2. Step 2: Convert to fraction form
   1,016.82/1,526.10 = 400.96/x
3. Step 3: Cross multiply
   1,016.82x = 1,526.10 × 400.96
4. Step 4: Simplify right side
   1,016.82x = 611,905.46
5. Step 5: Solve for x
   x = 611,905.46/1,016.82
6. Step 6: Final answer
   x = 601.78