Finding the Fourth Proportional to 1,016.72, 1,513.54 and 1,011.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.72 : 1,513.54 = 1,011.26 : x
2. Step 2: Convert to fraction form
   1,016.72/1,513.54 = 1,011.26/x
3. Step 3: Cross multiply
   1,016.72x = 1,513.54 × 1,011.26
4. Step 4: Simplify right side
   1,016.72x = 1,530,582.46
5. Step 5: Solve for x
   x = 1,530,582.46/1,016.72
6. Step 6: Final answer
   x = 1,505.41