Finding the Fourth Proportional to 1,016.10, 1,525.41 and 668.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.10 : 1,525.41 = 668.35 : x
2. Step 2: Convert to fraction form
   1,016.10/1,525.41 = 668.35/x
3. Step 3: Cross multiply
   1,016.10x = 1,525.41 × 668.35
4. Step 4: Simplify right side
   1,016.10x = 1,019,507.77
5. Step 5: Solve for x
   x = 1,019,507.77/1,016.10
6. Step 6: Final answer
   x = 1,003.35