Finding the Fourth Proportional to 2,114.32, 3,171.49 and 554.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,114.32 : 3,171.49 = 554.31 : x
2. Step 2: Convert to fraction form
   2,114.32/3,171.49 = 554.31/x
3. Step 3: Cross multiply
   2,114.32x = 3,171.49 × 554.31
4. Step 4: Simplify right side
   2,114.32x = 1,757,982.25
5. Step 5: Solve for x
   x = 1,757,982.25/2,114.32
6. Step 6: Final answer
   x = 831.47