Finding the Fourth Proportional to 1,783.73, 2,461.55 and 997.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,783.73 : 2,461.55 = 997.78 : x
2. Step 2: Convert to fraction form
   1,783.73/2,461.55 = 997.78/x
3. Step 3: Cross multiply
   1,783.73x = 2,461.55 × 997.78
4. Step 4: Simplify right side
   1,783.73x = 2,456,081.70
5. Step 5: Solve for x
   x = 2,456,081.70/1,783.73
6. Step 6: Final answer
   x = 1,376.94