Finding the Fourth Proportional to 2,143.77, 2,957.92 and 1,357.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.77 : 2,957.92 = 1,357.37 : x
2. Step 2: Convert to fraction form
   2,143.77/2,957.92 = 1,357.37/x
3. Step 3: Cross multiply
   2,143.77x = 2,957.92 × 1,357.37
4. Step 4: Simplify right side
   2,143.77x = 4,014,973.69
5. Step 5: Solve for x
   x = 4,014,973.69/2,143.77
6. Step 6: Final answer
   x = 1,872.86