Finding the Fourth Proportional to 2,266.95, 3,128.63 and 1,272.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,266.95 : 3,128.63 = 1,272.17 : x
2. Step 2: Convert to fraction form
   2,266.95/3,128.63 = 1,272.17/x
3. Step 3: Cross multiply
   2,266.95x = 3,128.63 × 1,272.17
4. Step 4: Simplify right side
   2,266.95x = 3,980,150.69
5. Step 5: Solve for x
   x = 3,980,150.69/2,266.95
6. Step 6: Final answer
   x = 1,755.73