Finding the Fourth Proportional to 1,997.30, 2,756.76 and 1,438.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,997.30 : 2,756.76 = 1,438.94 : x
2. Step 2: Convert to fraction form
   1,997.30/2,756.76 = 1,438.94/x
3. Step 3: Cross multiply
   1,997.30x = 2,756.76 × 1,438.94
4. Step 4: Simplify right side
   1,997.30x = 3,966,812.23
5. Step 5: Solve for x
   x = 3,966,812.23/1,997.30
6. Step 6: Final answer
   x = 1,986.09