Finding the Fourth Proportional to 2,624.20, 3,621.46 and 1,445.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,624.20 : 3,621.46 = 1,445.28 : x
2. Step 2: Convert to fraction form
   2,624.20/3,621.46 = 1,445.28/x
3. Step 3: Cross multiply
   2,624.20x = 3,621.46 × 1,445.28
4. Step 4: Simplify right side
   2,624.20x = 5,234,023.71
5. Step 5: Solve for x
   x = 5,234,023.71/2,624.20
6. Step 6: Final answer
   x = 1,994.52