Finding the Fourth Proportional to 1,783.72, 2,461.42 and 997.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,783.72 : 2,461.42 = 997.76 : x
2. Step 2: Convert to fraction form
   1,783.72/2,461.42 = 997.76/x
3. Step 3: Cross multiply
   1,783.72x = 2,461.42 × 997.76
4. Step 4: Simplify right side
   1,783.72x = 2,455,906.42
5. Step 5: Solve for x
   x = 2,455,906.42/1,783.72
6. Step 6: Final answer
   x = 1,376.85