Finding the Fourth Proportional to 3,659.32, 5,049.85 and 1,980.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,659.32 : 5,049.85 = 1,980.71 : x
2. Step 2: Convert to fraction form
   3,659.32/5,049.85 = 1,980.71/x
3. Step 3: Cross multiply
   3,659.32x = 5,049.85 × 1,980.71
4. Step 4: Simplify right side
   3,659.32x = 10,002,292.26
5. Step 5: Solve for x
   x = 10,002,292.26/3,659.32
6. Step 6: Final answer
   x = 2,733.38