Finding the Fourth Proportional to 3,576.55, 5,364.72 and 979.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,576.55 : 5,364.72 = 979.49 : x
2. Step 2: Convert to fraction form
   3,576.55/5,364.72 = 979.49/x
3. Step 3: Cross multiply
   3,576.55x = 5,364.72 × 979.49
4. Step 4: Simplify right side
   3,576.55x = 5,254,662.77
5. Step 5: Solve for x
   x = 5,254,662.77/3,576.55
6. Step 6: Final answer
   x = 1,469.20