Finding the Fourth Proportional to 1,433.31, 2,150.01 and 459.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.31 : 2,150.01 = 459.28 : x
2. Step 2: Convert to fraction form
   1,433.31/2,150.01 = 459.28/x
3. Step 3: Cross multiply
   1,433.31x = 2,150.01 × 459.28
4. Step 4: Simplify right side
   1,433.31x = 987,456.59
5. Step 5: Solve for x
   x = 987,456.59/1,433.31
6. Step 6: Final answer
   x = 688.93