Finding the Fourth Proportional to 1,825.30, 2,519.18 and 1,039.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,825.30 : 2,519.18 = 1,039.42 : x
2. Step 2: Convert to fraction form
   1,825.30/2,519.18 = 1,039.42/x
3. Step 3: Cross multiply
   1,825.30x = 2,519.18 × 1,039.42
4. Step 4: Simplify right side
   1,825.30x = 2,618,480.88
5. Step 5: Solve for x
   x = 2,618,480.88/1,825.30
6. Step 6: Final answer
   x = 1,434.55