Finding the Fourth Proportional to 2,266.68, 3,128.04 and 1,272

Step by Step Solution

1. Step 1: Write the proportion equation
   2,266.68 : 3,128.04 = 1,272 : x
2. Step 2: Convert to fraction form
   2,266.68/3,128.04 = 1,272/x
3. Step 3: Cross multiply
   2,266.68x = 3,128.04 × 1,272
4. Step 4: Simplify right side
   2,266.68x = 3,978,866.88
5. Step 5: Solve for x
   x = 3,978,866.88/2,266.68
6. Step 6: Final answer
   x = 1,755.37