Finding the Fourth Proportional to 2,048.69, 3,072.39 and 661.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,048.69 : 3,072.39 = 661.69 : x
2. Step 2: Convert to fraction form
   2,048.69/3,072.39 = 661.69/x
3. Step 3: Cross multiply
   2,048.69x = 3,072.39 × 661.69
4. Step 4: Simplify right side
   2,048.69x = 2,032,984.39
5. Step 5: Solve for x
   x = 2,032,984.39/2,048.69
6. Step 6: Final answer
   x = 992.33