Finding the Fourth Proportional to 1,996.12, 3,009.13 and 1,862.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,996.12 : 3,009.13 = 1,862.31 : x
2. Step 2: Convert to fraction form
   1,996.12/3,009.13 = 1,862.31/x
3. Step 3: Cross multiply
   1,996.12x = 3,009.13 × 1,862.31
4. Step 4: Simplify right side
   1,996.12x = 5,603,932.89
5. Step 5: Solve for x
   x = 5,603,932.89/1,996.12
6. Step 6: Final answer
   x = 2,807.41