Finding the Fourth Proportional to 2,151.93, 3,227.18 and 690.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.93 : 3,227.18 = 690.73 : x
2. Step 2: Convert to fraction form
   2,151.93/3,227.18 = 690.73/x
3. Step 3: Cross multiply
   2,151.93x = 3,227.18 × 690.73
4. Step 4: Simplify right side
   2,151.93x = 2,229,098.52
5. Step 5: Solve for x
   x = 2,229,098.52/2,151.93
6. Step 6: Final answer
   x = 1,035.86