Finding the Fourth Proportional to 2,007.93, 2,771.27 and 1,221.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.93 : 2,771.27 = 1,221.84 : x
2. Step 2: Convert to fraction form
   2,007.93/2,771.27 = 1,221.84/x
3. Step 3: Cross multiply
   2,007.93x = 2,771.27 × 1,221.84
4. Step 4: Simplify right side
   2,007.93x = 3,386,042.43
5. Step 5: Solve for x
   x = 3,386,042.43/2,007.93
6. Step 6: Final answer
   x = 1,686.33