Finding the Fourth Proportional to 1,061.47, 1,591.39 and 483.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.47 : 1,591.39 = 483.94 : x
2. Step 2: Convert to fraction form
   1,061.47/1,591.39 = 483.94/x
3. Step 3: Cross multiply
   1,061.47x = 1,591.39 × 483.94
4. Step 4: Simplify right side
   1,061.47x = 770,137.28
5. Step 5: Solve for x
   x = 770,137.28/1,061.47
6. Step 6: Final answer
   x = 725.54