Finding the Fourth Proportional to 706.72, 1,059.42 and 382.12

Step by Step Solution

1. Step 1: Write the proportion equation
   706.72 : 1,059.42 = 382.12 : x
2. Step 2: Convert to fraction form
   706.72/1,059.42 = 382.12/x
3. Step 3: Cross multiply
   706.72x = 1,059.42 × 382.12
4. Step 4: Simplify right side
   706.72x = 404,825.57
5. Step 5: Solve for x
   x = 404,825.57/706.72
6. Step 6: Final answer
   x = 572.82