Finding the Fourth Proportional to 2,620.48, 3,928.82 and 1,322.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.48 : 3,928.82 = 1,322.86 : x
2. Step 2: Convert to fraction form
   2,620.48/3,928.82 = 1,322.86/x
3. Step 3: Cross multiply
   2,620.48x = 3,928.82 × 1,322.86
4. Step 4: Simplify right side
   2,620.48x = 5,197,278.83
5. Step 5: Solve for x
   x = 5,197,278.83/2,620.48
6. Step 6: Final answer
   x = 1,983.33