Finding the Fourth Proportional to 1,147.94, 1,721.89 and 282.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147.94 : 1,721.89 = 282.25 : x
2. Step 2: Convert to fraction form
   1,147.94/1,721.89 = 282.25/x
3. Step 3: Cross multiply
   1,147.94x = 1,721.89 × 282.25
4. Step 4: Simplify right side
   1,147.94x = 486,005.96
5. Step 5: Solve for x
   x = 486,005.96/1,147.94
6. Step 6: Final answer
   x = 423.37