Finding the Fourth Proportional to 2,267.01, 3,128.40 and 1,272.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,267.01 : 3,128.40 = 1,272.29 : x
2. Step 2: Convert to fraction form
   2,267.01/3,128.40 = 1,272.29/x
3. Step 3: Cross multiply
   2,267.01x = 3,128.40 × 1,272.29
4. Step 4: Simplify right side
   2,267.01x = 3,980,216.39
5. Step 5: Solve for x
   x = 3,980,216.39/2,267.01
6. Step 6: Final answer
   x = 1,755.71