Finding the Fourth Proportional to 2,383.82, 3,574.46 and 921.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,383.82 : 3,574.46 = 921.50 : x
2. Step 2: Convert to fraction form
   2,383.82/3,574.46 = 921.50/x
3. Step 3: Cross multiply
   2,383.82x = 3,574.46 × 921.50
4. Step 4: Simplify right side
   2,383.82x = 3,293,864.89
5. Step 5: Solve for x
   x = 3,293,864.89/2,383.82
6. Step 6: Final answer
   x = 1,381.76