Finding the Fourth Proportional to 2,142.89, 2,957.51 and 1,357.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.89 : 2,957.51 = 1,357.01 : x
2. Step 2: Convert to fraction form
   2,142.89/2,957.51 = 1,357.01/x
3. Step 3: Cross multiply
   2,142.89x = 2,957.51 × 1,357.01
4. Step 4: Simplify right side
   2,142.89x = 4,013,370.65
5. Step 5: Solve for x
   x = 4,013,370.65/2,142.89
6. Step 6: Final answer
   x = 1,872.88