Finding the Fourth Proportional to 1,780.51, 2,456.57 and 1,034.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780.51 : 2,456.57 = 1,034.32 : x
2. Step 2: Convert to fraction form
   1,780.51/2,456.57 = 1,034.32/x
3. Step 3: Cross multiply
   1,780.51x = 2,456.57 × 1,034.32
4. Step 4: Simplify right side
   1,780.51x = 2,540,868.17
5. Step 5: Solve for x
   x = 2,540,868.17/1,780.51
6. Step 6: Final answer
   x = 1,427.05