Finding the Fourth Proportional to 2,647.56, 3,968.32 and 1,258.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.56 : 3,968.32 = 1,258.93 : x
2. Step 2: Convert to fraction form
   2,647.56/3,968.32 = 1,258.93/x
3. Step 3: Cross multiply
   2,647.56x = 3,968.32 × 1,258.93
4. Step 4: Simplify right side
   2,647.56x = 4,995,837.10
5. Step 5: Solve for x
   x = 4,995,837.10/2,647.56
6. Step 6: Final answer
   x = 1,886.96