Finding the Fourth Proportional to 1,323.05, 1,981.59 and 1,297.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,323.05 : 1,981.59 = 1,297.64 : x
2. Step 2: Convert to fraction form
   1,323.05/1,981.59 = 1,297.64/x
3. Step 3: Cross multiply
   1,323.05x = 1,981.59 × 1,297.64
4. Step 4: Simplify right side
   1,323.05x = 2,571,380.54
5. Step 5: Solve for x
   x = 2,571,380.54/1,323.05
6. Step 6: Final answer
   x = 1,943.53