Finding the Fourth Proportional to 2,205.32, 3,043.23 and 1,210.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.32 : 3,043.23 = 1,210.57 : x
2. Step 2: Convert to fraction form
   2,205.32/3,043.23 = 1,210.57/x
3. Step 3: Cross multiply
   2,205.32x = 3,043.23 × 1,210.57
4. Step 4: Simplify right side
   2,205.32x = 3,684,042.94
5. Step 5: Solve for x
   x = 3,684,042.94/2,205.32
6. Step 6: Final answer
   x = 1,670.53