Finding the Fourth Proportional to 1,825.61, 2,519.17 and 1,039.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,825.61 : 2,519.17 = 1,039.50 : x
2. Step 2: Convert to fraction form
   1,825.61/2,519.17 = 1,039.50/x
3. Step 3: Cross multiply
   1,825.61x = 2,519.17 × 1,039.50
4. Step 4: Simplify right side
   1,825.61x = 2,618,674.62
5. Step 5: Solve for x
   x = 2,618,674.62/1,825.61
6. Step 6: Final answer
   x = 1,434.41