Finding the Fourth Proportional to 2,141.72, 2,954.18 and 1,313.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.72 : 2,954.18 = 1,313.72 : x
2. Step 2: Convert to fraction form
   2,141.72/2,954.18 = 1,313.72/x
3. Step 3: Cross multiply
   2,141.72x = 2,954.18 × 1,313.72
4. Step 4: Simplify right side
   2,141.72x = 3,880,965.35
5. Step 5: Solve for x
   x = 3,880,965.35/2,141.72
6. Step 6: Final answer
   x = 1,812.08