Finding the Fourth Proportional to 1,780.25, 2,456.61 and 1,034.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780.25 : 2,456.61 = 1,034.09 : x
2. Step 2: Convert to fraction form
   1,780.25/2,456.61 = 1,034.09/x
3. Step 3: Cross multiply
   1,780.25x = 2,456.61 × 1,034.09
4. Step 4: Simplify right side
   1,780.25x = 2,540,355.83
5. Step 5: Solve for x
   x = 2,540,355.83/1,780.25
6. Step 6: Final answer
   x = 1,426.97