Finding the Fourth Proportional to 2,141.60, 2,954.72 and 1,257.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.60 : 2,954.72 = 1,257.62 : x
2. Step 2: Convert to fraction form
   2,141.60/2,954.72 = 1,257.62/x
3. Step 3: Cross multiply
   2,141.60x = 2,954.72 × 1,257.62
4. Step 4: Simplify right side
   2,141.60x = 3,715,908.68
5. Step 5: Solve for x
   x = 3,715,908.68/2,141.60
6. Step 6: Final answer
   x = 1,735.11