Finding the Fourth Proportional to 2,005.30, 2,766.58 and 1,249.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,005.30 : 2,766.58 = 1,249.03 : x
2. Step 2: Convert to fraction form
   2,005.30/2,766.58 = 1,249.03/x
3. Step 3: Cross multiply
   2,005.30x = 2,766.58 × 1,249.03
4. Step 4: Simplify right side
   2,005.30x = 3,455,541.42
5. Step 5: Solve for x
   x = 3,455,541.42/2,005.30
6. Step 6: Final answer
   x = 1,723.20