Finding the Fourth Proportional to 2,647.53, 3,968.46 and 1,260

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.53 : 3,968.46 = 1,260 : x
2. Step 2: Convert to fraction form
   2,647.53/3,968.46 = 1,260/x
3. Step 3: Cross multiply
   2,647.53x = 3,968.46 × 1,260
4. Step 4: Simplify right side
   2,647.53x = 5,000,259.60
5. Step 5: Solve for x
   x = 5,000,259.60/2,647.53
6. Step 6: Final answer
   x = 1,888.65