Finding the Fourth Proportional to 3,449.82, 5,172.18 and 1,258.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,449.82 : 5,172.18 = 1,258.56 : x
2. Step 2: Convert to fraction form
   3,449.82/5,172.18 = 1,258.56/x
3. Step 3: Cross multiply
   3,449.82x = 5,172.18 × 1,258.56
4. Step 4: Simplify right side
   3,449.82x = 6,509,498.86
5. Step 5: Solve for x
   x = 6,509,498.86/3,449.82
6. Step 6: Final answer
   x = 1,886.91