Finding the Fourth Proportional to 2,126.33, 3,188.25 and 826.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,126.33 : 3,188.25 = 826.28 : x
2. Step 2: Convert to fraction form
   2,126.33/3,188.25 = 826.28/x
3. Step 3: Cross multiply
   2,126.33x = 3,188.25 × 826.28
4. Step 4: Simplify right side
   2,126.33x = 2,634,371.27
5. Step 5: Solve for x
   x = 2,634,371.27/2,126.33
6. Step 6: Final answer
   x = 1,238.93