Finding the Fourth Proportional to 1,996.02, 2,990.73 and 1,020.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,996.02 : 2,990.73 = 1,020.78 : x
2. Step 2: Convert to fraction form
   1,996.02/2,990.73 = 1,020.78/x
3. Step 3: Cross multiply
   1,996.02x = 2,990.73 × 1,020.78
4. Step 4: Simplify right side
   1,996.02x = 3,052,877.37
5. Step 5: Solve for x
   x = 3,052,877.37/1,996.02
6. Step 6: Final answer
   x = 1,529.48