Finding the Fourth Proportional to 2,097.43, 3,144.64 and 986.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,097.43 : 3,144.64 = 986.22 : x
2. Step 2: Convert to fraction form
   2,097.43/3,144.64 = 986.22/x
3. Step 3: Cross multiply
   2,097.43x = 3,144.64 × 986.22
4. Step 4: Simplify right side
   2,097.43x = 3,101,306.86
5. Step 5: Solve for x
   x = 3,101,306.86/2,097.43
6. Step 6: Final answer
   x = 1,478.62