Finding the Fourth Proportional to 2,581.46, 3,873.54 and 1,121.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.46 : 3,873.54 = 1,121.63 : x
2. Step 2: Convert to fraction form
   2,581.46/3,873.54 = 1,121.63/x
3. Step 3: Cross multiply
   2,581.46x = 3,873.54 × 1,121.63
4. Step 4: Simplify right side
   2,581.46x = 4,344,659.30
5. Step 5: Solve for x
   x = 4,344,659.30/2,581.46
6. Step 6: Final answer
   x = 1,683.03