Finding the Fourth Proportional to 2,010.82, 3,016.72 and 1,021.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.82 : 3,016.72 = 1,021.20 : x
2. Step 2: Convert to fraction form
   2,010.82/3,016.72 = 1,021.20/x
3. Step 3: Cross multiply
   2,010.82x = 3,016.72 × 1,021.20
4. Step 4: Simplify right side
   2,010.82x = 3,080,674.46
5. Step 5: Solve for x
   x = 3,080,674.46/2,010.82
6. Step 6: Final answer
   x = 1,532.05