Finding the Fourth Proportional to 2,205.47, 3,043.56 and 1,210.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.47 : 3,043.56 = 1,210.73 : x
2. Step 2: Convert to fraction form
   2,205.47/3,043.56 = 1,210.73/x
3. Step 3: Cross multiply
   2,205.47x = 3,043.56 × 1,210.73
4. Step 4: Simplify right side
   2,205.47x = 3,684,929.40
5. Step 5: Solve for x
   x = 3,684,929.40/2,205.47
6. Step 6: Final answer
   x = 1,670.81