Finding the Fourth Proportional to 2,402.27, 3,603.78 and 921.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.27 : 3,603.78 = 921.42 : x
2. Step 2: Convert to fraction form
   2,402.27/3,603.78 = 921.42/x
3. Step 3: Cross multiply
   2,402.27x = 3,603.78 × 921.42
4. Step 4: Simplify right side
   2,402.27x = 3,320,594.97
5. Step 5: Solve for x
   x = 3,320,594.97/2,402.27
6. Step 6: Final answer
   x = 1,382.28