Finding the Fourth Proportional to 2,227.50, 3,341.43 and 688.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,227.50 : 3,341.43 = 688.50 : x
2. Step 2: Convert to fraction form
   2,227.50/3,341.43 = 688.50/x
3. Step 3: Cross multiply
   2,227.50x = 3,341.43 × 688.50
4. Step 4: Simplify right side
   2,227.50x = 2,300,574.56
5. Step 5: Solve for x
   x = 2,300,574.56/2,227.50
6. Step 6: Final answer
   x = 1,032.81