Finding the Fourth Proportional to 1,145.00, 1,584.27 and 997.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.00 : 1,584.27 = 997.94 : x
2. Step 2: Convert to fraction form
   1,145.00/1,584.27 = 997.94/x
3. Step 3: Cross multiply
   1,145.00x = 1,584.27 × 997.94
4. Step 4: Simplify right side
   1,145.00x = 1,581,010.36
5. Step 5: Solve for x
   x = 1,581,010.36/1,145.00
6. Step 6: Final answer
   x = 1,380.79