Finding the Fourth Proportional to 2,266.78, 3,128.18 and 1,382.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,266.78 : 3,128.18 = 1,382.43 : x
2. Step 2: Convert to fraction form
   2,266.78/3,128.18 = 1,382.43/x
3. Step 3: Cross multiply
   2,266.78x = 3,128.18 × 1,382.43
4. Step 4: Simplify right side
   2,266.78x = 4,324,489.88
5. Step 5: Solve for x
   x = 4,324,489.88/2,266.78
6. Step 6: Final answer
   x = 1,907.77