Finding the Fourth Proportional to 3,658.89, 5,489.15 and 1,061.67

Step by Step Solution

1. Step 1: Write the proportion equation
   3,658.89 : 5,489.15 = 1,061.67 : x
2. Step 2: Convert to fraction form
   3,658.89/5,489.15 = 1,061.67/x
3. Step 3: Cross multiply
   3,658.89x = 5,489.15 × 1,061.67
4. Step 4: Simplify right side
   3,658.89x = 5,827,660.57
5. Step 5: Solve for x
   x = 5,827,660.57/3,658.89
6. Step 6: Final answer
   x = 1,592.74