Finding the Fourth Proportional to 2,180.34, 3,271.32 and 1,206.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.34 : 3,271.32 = 1,206.18 : x
2. Step 2: Convert to fraction form
   2,180.34/3,271.32 = 1,206.18/x
3. Step 3: Cross multiply
   2,180.34x = 3,271.32 × 1,206.18
4. Step 4: Simplify right side
   2,180.34x = 3,945,800.76
5. Step 5: Solve for x
   x = 3,945,800.76/2,180.34
6. Step 6: Final answer
   x = 1,809.72