Finding the Fourth Proportional to 2,141.56, 2,955.38 and 1,257.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.56 : 2,955.38 = 1,257.38 : x
2. Step 2: Convert to fraction form
   2,141.56/2,955.38 = 1,257.38/x
3. Step 3: Cross multiply
   2,141.56x = 2,955.38 × 1,257.38
4. Step 4: Simplify right side
   2,141.56x = 3,716,025.72
5. Step 5: Solve for x
   x = 3,716,025.72/2,141.56
6. Step 6: Final answer
   x = 1,735.19