Finding the Fourth Proportional to 1,061.55, 1,591.81 and 444.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.55 : 1,591.81 = 444.41 : x
2. Step 2: Convert to fraction form
   1,061.55/1,591.81 = 444.41/x
3. Step 3: Cross multiply
   1,061.55x = 1,591.81 × 444.41
4. Step 4: Simplify right side
   1,061.55x = 707,409.30
5. Step 5: Solve for x
   x = 707,409.30/1,061.55
6. Step 6: Final answer
   x = 666.39