Finding the Fourth Proportional to 1,780.03, 2,456.46 and 994.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780.03 : 2,456.46 = 994.12 : x
2. Step 2: Convert to fraction form
   1,780.03/2,456.46 = 994.12/x
3. Step 3: Cross multiply
   1,780.03x = 2,456.46 × 994.12
4. Step 4: Simplify right side
   1,780.03x = 2,442,016.02
5. Step 5: Solve for x
   x = 2,442,016.02/1,780.03
6. Step 6: Final answer
   x = 1,371.90