Finding the Fourth Proportional to 1,743.87, 2,405.94 and 997.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,743.87 : 2,405.94 = 997.30 : x
2. Step 2: Convert to fraction form
   1,743.87/2,405.94 = 997.30/x
3. Step 3: Cross multiply
   1,743.87x = 2,405.94 × 997.30
4. Step 4: Simplify right side
   1,743.87x = 2,399,443.96
5. Step 5: Solve for x
   x = 2,399,443.96/1,743.87
6. Step 6: Final answer
   x = 1,375.93