Finding the Fourth Proportional to 1,433.70, 1,978.02 and 910.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.70 : 1,978.02 = 910.04 : x
2. Step 2: Convert to fraction form
   1,433.70/1,978.02 = 910.04/x
3. Step 3: Cross multiply
   1,433.70x = 1,978.02 × 910.04
4. Step 4: Simplify right side
   1,433.70x = 1,800,067.43
5. Step 5: Solve for x
   x = 1,800,067.43/1,433.70
6. Step 6: Final answer
   x = 1,255.54