Finding the Fourth Proportional to 2,402.83, 3,603.60 and 921.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.83 : 3,603.60 = 921.73 : x
2. Step 2: Convert to fraction form
   2,402.83/3,603.60 = 921.73/x
3. Step 3: Cross multiply
   2,402.83x = 3,603.60 × 921.73
4. Step 4: Simplify right side
   2,402.83x = 3,321,546.23
5. Step 5: Solve for x
   x = 3,321,546.23/2,402.83
6. Step 6: Final answer
   x = 1,382.35