Finding the Fourth Proportional to 1,738.46, 2,608.32 and 814.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,738.46 : 2,608.32 = 814.31 : x
2. Step 2: Convert to fraction form
   1,738.46/2,608.32 = 814.31/x
3. Step 3: Cross multiply
   1,738.46x = 2,608.32 × 814.31
4. Step 4: Simplify right side
   1,738.46x = 2,123,981.06
5. Step 5: Solve for x
   x = 2,123,981.06/1,738.46
6. Step 6: Final answer
   x = 1,221.76