Finding the Fourth Proportional to 1,780.52, 2,456.93 and 994.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780.52 : 2,456.93 = 994.41 : x
2. Step 2: Convert to fraction form
   1,780.52/2,456.93 = 994.41/x
3. Step 3: Cross multiply
   1,780.52x = 2,456.93 × 994.41
4. Step 4: Simplify right side
   1,780.52x = 2,443,198.25
5. Step 5: Solve for x
   x = 2,443,198.25/1,780.52
6. Step 6: Final answer
   x = 1,372.19