Finding the Fourth Proportional to 1,783.69, 2,461.39 and 997.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,783.69 : 2,461.39 = 997.72 : x
2. Step 2: Convert to fraction form
   1,783.69/2,461.39 = 997.72/x
3. Step 3: Cross multiply
   1,783.69x = 2,461.39 × 997.72
4. Step 4: Simplify right side
   1,783.69x = 2,455,778.03
5. Step 5: Solve for x
   x = 2,455,778.03/1,783.69
6. Step 6: Final answer
   x = 1,376.80