Finding the Fourth Proportional to 3,577.59, 5,365.76 and 979.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,577.59 : 5,365.76 = 979.83 : x
2. Step 2: Convert to fraction form
   3,577.59/5,365.76 = 979.83/x
3. Step 3: Cross multiply
   3,577.59x = 5,365.76 × 979.83
4. Step 4: Simplify right side
   3,577.59x = 5,257,527.72
5. Step 5: Solve for x
   x = 5,257,527.72/3,577.59
6. Step 6: Final answer
   x = 1,469.57