Finding the Fourth Proportional to 2,141.46, 2,955.06 and 1,257.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.46 : 2,955.06 = 1,257.15 : x
2. Step 2: Convert to fraction form
   2,141.46/2,955.06 = 1,257.15/x
3. Step 3: Cross multiply
   2,141.46x = 2,955.06 × 1,257.15
4. Step 4: Simplify right side
   2,141.46x = 3,714,953.68
5. Step 5: Solve for x
   x = 3,714,953.68/2,141.46
6. Step 6: Final answer
   x = 1,734.78