Finding the Fourth Proportional to 2,267.19, 3,128.71 and 1,272.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,267.19 : 3,128.71 = 1,272.47 : x
2. Step 2: Convert to fraction form
   2,267.19/3,128.71 = 1,272.47/x
3. Step 3: Cross multiply
   2,267.19x = 3,128.71 × 1,272.47
4. Step 4: Simplify right side
   2,267.19x = 3,981,189.61
5. Step 5: Solve for x
   x = 3,981,189.61/2,267.19
6. Step 6: Final answer
   x = 1,756.00