Finding the Fourth Proportional to 2,622.42, 3,933.90 and 1,323.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.42 : 3,933.90 = 1,323.72 : x
2. Step 2: Convert to fraction form
   2,622.42/3,933.90 = 1,323.72/x
3. Step 3: Cross multiply
   2,622.42x = 3,933.90 × 1,323.72
4. Step 4: Simplify right side
   2,622.42x = 5,207,382.11
5. Step 5: Solve for x
   x = 5,207,382.11/2,622.42
6. Step 6: Final answer
   x = 1,985.72