Finding the Fourth Proportional to 2,931.67, 4,398.24 and 851.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,931.67 : 4,398.24 = 851.63 : x
2. Step 2: Convert to fraction form
   2,931.67/4,398.24 = 851.63/x
3. Step 3: Cross multiply
   2,931.67x = 4,398.24 × 851.63
4. Step 4: Simplify right side
   2,931.67x = 3,745,654.33
5. Step 5: Solve for x
   x = 3,745,654.33/2,931.67
6. Step 6: Final answer
   x = 1,277.65