Finding the Fourth Proportional to 1,989.33, 2,982.54 and 1,338.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989.33 : 2,982.54 = 1,338.69 : x
2. Step 2: Convert to fraction form
   1,989.33/2,982.54 = 1,338.69/x
3. Step 3: Cross multiply
   1,989.33x = 2,982.54 × 1,338.69
4. Step 4: Simplify right side
   1,989.33x = 3,992,696.47
5. Step 5: Solve for x
   x = 3,992,696.47/1,989.33
6. Step 6: Final answer
   x = 2,007.06