Finding the Fourth Proportional to 1,817.89, 2,723.01 and 831.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,817.89 : 2,723.01 = 831.54 : x
2. Step 2: Convert to fraction form
   1,817.89/2,723.01 = 831.54/x
3. Step 3: Cross multiply
   1,817.89x = 2,723.01 × 831.54
4. Step 4: Simplify right side
   1,817.89x = 2,264,288.33
5. Step 5: Solve for x
   x = 2,264,288.33/1,817.89
6. Step 6: Final answer
   x = 1,245.56