Finding the Fourth Proportional to 1,060.38, 1,590.29 and 443.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,060.38 : 1,590.29 = 443.96 : x
2. Step 2: Convert to fraction form
   1,060.38/1,590.29 = 443.96/x
3. Step 3: Cross multiply
   1,060.38x = 1,590.29 × 443.96
4. Step 4: Simplify right side
   1,060.38x = 706,025.15
5. Step 5: Solve for x
   x = 706,025.15/1,060.38
6. Step 6: Final answer
   x = 665.82