Finding the Fourth Proportional to 1,095.33, 1,641.56 and 445.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095.33 : 1,641.56 = 445.71 : x
2. Step 2: Convert to fraction form
   1,095.33/1,641.56 = 445.71/x
3. Step 3: Cross multiply
   1,095.33x = 1,641.56 × 445.71
4. Step 4: Simplify right side
   1,095.33x = 731,657.48
5. Step 5: Solve for x
   x = 731,657.48/1,095.33
6. Step 6: Final answer
   x = 667.98