Finding the Fourth Proportional to 1,061.39, 1,591.55 and 444.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.39 : 1,591.55 = 444.93 : x
2. Step 2: Convert to fraction form
   1,061.39/1,591.55 = 444.93/x
3. Step 3: Cross multiply
   1,061.39x = 1,591.55 × 444.93
4. Step 4: Simplify right side
   1,061.39x = 708,126.12
5. Step 5: Solve for x
   x = 708,126.12/1,061.39
6. Step 6: Final answer
   x = 667.17