Finding the Fourth Proportional to 1,061.33, 1,591.70 and 444.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.33 : 1,591.70 = 444.91 : x
2. Step 2: Convert to fraction form
   1,061.33/1,591.70 = 444.91/x
3. Step 3: Cross multiply
   1,061.33x = 1,591.70 × 444.91
4. Step 4: Simplify right side
   1,061.33x = 708,160.38
5. Step 5: Solve for x
   x = 708,160.38/1,061.33
6. Step 6: Final answer
   x = 667.24