Finding the Fourth Proportional to 1,061.47, 1,592.82 and 445.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.47 : 1,592.82 = 445.12 : x
2. Step 2: Convert to fraction form
   1,061.47/1,592.82 = 445.12/x
3. Step 3: Cross multiply
   1,061.47x = 1,592.82 × 445.12
4. Step 4: Simplify right side
   1,061.47x = 708,992.06
5. Step 5: Solve for x
   x = 708,992.06/1,061.47
6. Step 6: Final answer
   x = 667.94