Finding the Fourth Proportional to 1,783.45, 2,461.27 and 997.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,783.45 : 2,461.27 = 997.55 : x
2. Step 2: Convert to fraction form
   1,783.45/2,461.27 = 997.55/x
3. Step 3: Cross multiply
   1,783.45x = 2,461.27 × 997.55
4. Step 4: Simplify right side
   1,783.45x = 2,455,239.89
5. Step 5: Solve for x
   x = 2,455,239.89/1,783.45
6. Step 6: Final answer
   x = 1,376.68