Finding the Fourth Proportional to 2,205.02, 3,042.83 and 1,210.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.02 : 3,042.83 = 1,210.30 : x
2. Step 2: Convert to fraction form
   2,205.02/3,042.83 = 1,210.30/x
3. Step 3: Cross multiply
   2,205.02x = 3,042.83 × 1,210.30
4. Step 4: Simplify right side
   2,205.02x = 3,682,737.15
5. Step 5: Solve for x
   x = 3,682,737.15/2,205.02
6. Step 6: Final answer
   x = 1,670.16