Finding the Fourth Proportional to 2,849.40, 4,272.82 and 1,205.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,849.40 : 4,272.82 = 1,205.10 : x
2. Step 2: Convert to fraction form
   2,849.40/4,272.82 = 1,205.10/x
3. Step 3: Cross multiply
   2,849.40x = 4,272.82 × 1,205.10
4. Step 4: Simplify right side
   2,849.40x = 5,149,172.37
5. Step 5: Solve for x
   x = 5,149,172.37/2,849.40
6. Step 6: Final answer
   x = 1,807.11