Finding the Fourth Proportional to 2,906.79, 4,360.49 and 931.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,906.79 : 4,360.49 = 931.73 : x
2. Step 2: Convert to fraction form
   2,906.79/4,360.49 = 931.73/x
3. Step 3: Cross multiply
   2,906.79x = 4,360.49 × 931.73
4. Step 4: Simplify right side
   2,906.79x = 4,062,772.89
5. Step 5: Solve for x
   x = 4,062,772.89/2,906.79
6. Step 6: Final answer
   x = 1,397.68