Finding the Fourth Proportional to 1,991.69, 2,982.89 and 1,922.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,991.69 : 2,982.89 = 1,922.48 : x
2. Step 2: Convert to fraction form
   1,991.69/2,982.89 = 1,922.48/x
3. Step 3: Cross multiply
   1,991.69x = 2,982.89 × 1,922.48
4. Step 4: Simplify right side
   1,991.69x = 5,734,536.26
5. Step 5: Solve for x
   x = 5,734,536.26/1,991.69
6. Step 6: Final answer
   x = 2,879.24