Finding the Fourth Proportional to 2,382.86, 3,574.13 and 921.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,382.86 : 3,574.13 = 921.89 : x
2. Step 2: Convert to fraction form
   2,382.86/3,574.13 = 921.89/x
3. Step 3: Cross multiply
   2,382.86x = 3,574.13 × 921.89
4. Step 4: Simplify right side
   2,382.86x = 3,294,959.03
5. Step 5: Solve for x
   x = 3,294,959.03/2,382.86
6. Step 6: Final answer
   x = 1,382.77