Finding the Fourth Proportional to 2,205.18, 3,043.16 and 1,210.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.18 : 3,043.16 = 1,210.56 : x
2. Step 2: Convert to fraction form
   2,205.18/3,043.16 = 1,210.56/x
3. Step 3: Cross multiply
   2,205.18x = 3,043.16 × 1,210.56
4. Step 4: Simplify right side
   2,205.18x = 3,683,921.72
5. Step 5: Solve for x
   x = 3,683,921.72/2,205.18
6. Step 6: Final answer
   x = 1,670.58