Finding the Fourth Proportional to 1,996.10, 2,992.31 and 1,020.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,996.10 : 2,992.31 = 1,020.05 : x
2. Step 2: Convert to fraction form
   1,996.10/2,992.31 = 1,020.05/x
3. Step 3: Cross multiply
   1,996.10x = 2,992.31 × 1,020.05
4. Step 4: Simplify right side
   1,996.10x = 3,052,300.72
5. Step 5: Solve for x
   x = 3,052,300.72/1,996.10
6. Step 6: Final answer
   x = 1,529.13