Finding the Fourth Proportional to 2,906.67, 4,360.31 and 931.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,906.67 : 4,360.31 = 931.82 : x
2. Step 2: Convert to fraction form
   2,906.67/4,360.31 = 931.82/x
3. Step 3: Cross multiply
   2,906.67x = 4,360.31 × 931.82
4. Step 4: Simplify right side
   2,906.67x = 4,063,001.10
5. Step 5: Solve for x
   x = 4,063,001.10/2,906.67
6. Step 6: Final answer
   x = 1,397.82