Finding the Fourth Proportional to 2,621.48, 3,928.98 and 1,323.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.48 : 3,928.98 = 1,323.32 : x
2. Step 2: Convert to fraction form
   2,621.48/3,928.98 = 1,323.32/x
3. Step 3: Cross multiply
   2,621.48x = 3,928.98 × 1,323.32
4. Step 4: Simplify right side
   2,621.48x = 5,199,297.81
5. Step 5: Solve for x
   x = 5,199,297.81/2,621.48
6. Step 6: Final answer
   x = 1,983.34