Finding the Fourth Proportional to 2,382.32, 3,573.12 and 921.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,382.32 : 3,573.12 = 921.29 : x
2. Step 2: Convert to fraction form
   2,382.32/3,573.12 = 921.29/x
3. Step 3: Cross multiply
   2,382.32x = 3,573.12 × 921.29
4. Step 4: Simplify right side
   2,382.32x = 3,291,879.72
5. Step 5: Solve for x
   x = 3,291,879.72/2,382.32
6. Step 6: Final answer
   x = 1,381.80