Finding the Fourth Proportional to 3,580.25, 4,939.83 and 2,164.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,580.25 : 4,939.83 = 2,164.77 : x
2. Step 2: Convert to fraction form
   3,580.25/4,939.83 = 2,164.77/x
3. Step 3: Cross multiply
   3,580.25x = 4,939.83 × 2,164.77
4. Step 4: Simplify right side
   3,580.25x = 10,693,595.79
5. Step 5: Solve for x
   x = 10,693,595.79/3,580.25
6. Step 6: Final answer
   x = 2,986.83