Finding the Fourth Proportional to 2,489.48, 3,729.15 and 1,997.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,489.48 : 3,729.15 = 1,997.00 : x
2. Step 2: Convert to fraction form
   2,489.48/3,729.15 = 1,997.00/x
3. Step 3: Cross multiply
   2,489.48x = 3,729.15 × 1,997.00
4. Step 4: Simplify right side
   2,489.48x = 7,447,093.90
5. Step 5: Solve for x
   x = 7,447,093.90/2,489.48
6. Step 6: Final answer
   x = 2,991.43