Finding the Fourth Proportional to 2,181.30, 3,269.55 and 1,208.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.30 : 3,269.55 = 1,208.10 : x
2. Step 2: Convert to fraction form
   2,181.30/3,269.55 = 1,208.10/x
3. Step 3: Cross multiply
   2,181.30x = 3,269.55 × 1,208.10
4. Step 4: Simplify right side
   2,181.30x = 3,949,943.36
5. Step 5: Solve for x
   x = 3,949,943.36/2,181.30
6. Step 6: Final answer
   x = 1,810.82