Finding the Fourth Proportional to 1,780.26, 2,456.71 and 1,034.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780.26 : 2,456.71 = 1,034.20 : x
2. Step 2: Convert to fraction form
   1,780.26/2,456.71 = 1,034.20/x
3. Step 3: Cross multiply
   1,780.26x = 2,456.71 × 1,034.20
4. Step 4: Simplify right side
   1,780.26x = 2,540,729.48
5. Step 5: Solve for x
   x = 2,540,729.48/1,780.26
6. Step 6: Final answer
   x = 1,427.17