Finding the Fourth Proportional to 1,983.93, 2,976.05 and 667.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,983.93 : 2,976.05 = 667.69 : x
2. Step 2: Convert to fraction form
   1,983.93/2,976.05 = 667.69/x
3. Step 3: Cross multiply
   1,983.93x = 2,976.05 × 667.69
4. Step 4: Simplify right side
   1,983.93x = 1,987,072.54
5. Step 5: Solve for x
   x = 1,987,072.54/1,983.93
6. Step 6: Final answer
   x = 1,001.58