Finding the Fourth Proportional to 2,050.43, 3,076.10 and 663.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,050.43 : 3,076.10 = 663.90 : x
2. Step 2: Convert to fraction form
   2,050.43/3,076.10 = 663.90/x
3. Step 3: Cross multiply
   2,050.43x = 3,076.10 × 663.90
4. Step 4: Simplify right side
   2,050.43x = 2,042,227.56
5. Step 5: Solve for x
   x = 2,042,227.56/2,050.43
6. Step 6: Final answer
   x = 996.00