Finding the Fourth Proportional to 1,162.72, 1,745.70 and 1,016.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.72 : 1,745.70 = 1,016.20 : x
2. Step 2: Convert to fraction form
   1,162.72/1,745.70 = 1,016.20/x
3. Step 3: Cross multiply
   1,162.72x = 1,745.70 × 1,016.20
4. Step 4: Simplify right side
   1,162.72x = 1,773,980.34
5. Step 5: Solve for x
   x = 1,773,980.34/1,162.72
6. Step 6: Final answer
   x = 1,525.72