Finding the Fourth Proportional to 2,647.42, 3,968.30 and 1,260.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.42 : 3,968.30 = 1,260.06 : x
2. Step 2: Convert to fraction form
   2,647.42/3,968.30 = 1,260.06/x
3. Step 3: Cross multiply
   2,647.42x = 3,968.30 × 1,260.06
4. Step 4: Simplify right side
   2,647.42x = 5,000,296.10
5. Step 5: Solve for x
   x = 5,000,296.10/2,647.42
6. Step 6: Final answer
   x = 1,888.74