Finding the Fourth Proportional to 1,061.10, 1,591.25 and 444.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.10 : 1,591.25 = 444.64 : x
2. Step 2: Convert to fraction form
   1,061.10/1,591.25 = 444.64/x
3. Step 3: Cross multiply
   1,061.10x = 1,591.25 × 444.64
4. Step 4: Simplify right side
   1,061.10x = 707,530.18
5. Step 5: Solve for x
   x = 707,530.18/1,061.10
6. Step 6: Final answer
   x = 666.79