Finding the Fourth Proportional to 2,266.99, 3,128.52 and 1,272.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,266.99 : 3,128.52 = 1,272.03 : x
2. Step 2: Convert to fraction form
   2,266.99/3,128.52 = 1,272.03/x
3. Step 3: Cross multiply
   2,266.99x = 3,128.52 × 1,272.03
4. Step 4: Simplify right side
   2,266.99x = 3,979,573.13
5. Step 5: Solve for x
   x = 3,979,573.13/2,266.99
6. Step 6: Final answer
   x = 1,755.45