Finding the Fourth Proportional to 1,996.89, 2,995.86 and 1,072.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,996.89 : 2,995.86 = 1,072.28 : x
2. Step 2: Convert to fraction form
   1,996.89/2,995.86 = 1,072.28/x
3. Step 3: Cross multiply
   1,996.89x = 2,995.86 × 1,072.28
4. Step 4: Simplify right side
   1,996.89x = 3,212,385.78
5. Step 5: Solve for x
   x = 3,212,385.78/1,996.89
6. Step 6: Final answer
   x = 1,608.69