Finding the Fourth Proportional to 3,061.25, 4,223.31 and 1,998.68

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.25 : 4,223.31 = 1,998.68 : x
2. Step 2: Convert to fraction form
   3,061.25/4,223.31 = 1,998.68/x
3. Step 3: Cross multiply
   3,061.25x = 4,223.31 × 1,998.68
4. Step 4: Simplify right side
   3,061.25x = 8,441,039.53
5. Step 5: Solve for x
   x = 8,441,039.53/3,061.25
6. Step 6: Final answer
   x = 2,757.38