Finding the Fourth Proportional to 2,072.52, 3,104.72 and 1,205

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.52 : 3,104.72 = 1,205 : x
2. Step 2: Convert to fraction form
   2,072.52/3,104.72 = 1,205/x
3. Step 3: Cross multiply
   2,072.52x = 3,104.72 × 1,205
4. Step 4: Simplify right side
   2,072.52x = 3,741,187.60
5. Step 5: Solve for x
   x = 3,741,187.60/2,072.52
6. Step 6: Final answer
   x = 1,805.14