Finding the Fourth Proportional to 2,382.15, 3,573.37 and 921.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,382.15 : 3,573.37 = 921.31 : x
2. Step 2: Convert to fraction form
   2,382.15/3,573.37 = 921.31/x
3. Step 3: Cross multiply
   2,382.15x = 3,573.37 × 921.31
4. Step 4: Simplify right side
   2,382.15x = 3,292,181.51
5. Step 5: Solve for x
   x = 3,292,181.51/2,382.15
6. Step 6: Final answer
   x = 1,382.02