Finding the Fourth Proportional to 1,621.32, 2,419.33 and 1,446.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621.32 : 2,419.33 = 1,446.79 : x
2. Step 2: Convert to fraction form
   1,621.32/2,419.33 = 1,446.79/x
3. Step 3: Cross multiply
   1,621.32x = 2,419.33 × 1,446.79
4. Step 4: Simplify right side
   1,621.32x = 3,500,262.45
5. Step 5: Solve for x
   x = 3,500,262.45/1,621.32
6. Step 6: Final answer
   x = 2,158.90