Finding the Fourth Proportional to 1,743.72, 2,406.24 and 997.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,743.72 : 2,406.24 = 997.71 : x
2. Step 2: Convert to fraction form
   1,743.72/2,406.24 = 997.71/x
3. Step 3: Cross multiply
   1,743.72x = 2,406.24 × 997.71
4. Step 4: Simplify right side
   1,743.72x = 2,400,729.71
5. Step 5: Solve for x
   x = 2,400,729.71/1,743.72
6. Step 6: Final answer
   x = 1,376.79