Finding the Fourth Proportional to 1,061.67, 1,591.89 and 484.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.67 : 1,591.89 = 484.56 : x
2. Step 2: Convert to fraction form
   1,061.67/1,591.89 = 484.56/x
3. Step 3: Cross multiply
   1,061.67x = 1,591.89 × 484.56
4. Step 4: Simplify right side
   1,061.67x = 771,366.22
5. Step 5: Solve for x
   x = 771,366.22/1,061.67
6. Step 6: Final answer
   x = 726.56