Finding the Fourth Proportional to 1,434.33, 1,978.83 and 910.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.33 : 1,978.83 = 910.26 : x
2. Step 2: Convert to fraction form
   1,434.33/1,978.83 = 910.26/x
3. Step 3: Cross multiply
   1,434.33x = 1,978.83 × 910.26
4. Step 4: Simplify right side
   1,434.33x = 1,801,249.80
5. Step 5: Solve for x
   x = 1,801,249.80/1,434.33
6. Step 6: Final answer
   x = 1,255.81