Finding the Fourth Proportional to 2,957, 4,080.71 and 1,910.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,957 : 4,080.71 = 1,910.89 : x
2. Step 2: Convert to fraction form
   2,957/4,080.71 = 1,910.89/x
3. Step 3: Cross multiply
   2,957x = 4,080.71 × 1,910.89
4. Step 4: Simplify right side
   2,957x = 7,797,767.53
5. Step 5: Solve for x
   x = 7,797,767.53/2,957
6. Step 6: Final answer
   x = 2,637.05