Finding the Fourth Proportional to 1,780.03, 2,456.43 and 983.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780.03 : 2,456.43 = 983.37 : x
2. Step 2: Convert to fraction form
   1,780.03/2,456.43 = 983.37/x
3. Step 3: Cross multiply
   1,780.03x = 2,456.43 × 983.37
4. Step 4: Simplify right side
   1,780.03x = 2,415,579.57
5. Step 5: Solve for x
   x = 2,415,579.57/1,780.03
6. Step 6: Final answer
   x = 1,357.04