Finding the Fourth Proportional to 1,620.68, 2,419.22 and 1,500.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,620.68 : 2,419.22 = 1,500.32 : x
2. Step 2: Convert to fraction form
   1,620.68/2,419.22 = 1,500.32/x
3. Step 3: Cross multiply
   1,620.68x = 2,419.22 × 1,500.32
4. Step 4: Simplify right side
   1,620.68x = 3,629,604.15
5. Step 5: Solve for x
   x = 3,629,604.15/1,620.68
6. Step 6: Final answer
   x = 2,239.56