Finding the Fourth Proportional to 3,081.83, 4,624.57 and 1,621.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,081.83 : 4,624.57 = 1,621.10 : x
2. Step 2: Convert to fraction form
   3,081.83/4,624.57 = 1,621.10/x
3. Step 3: Cross multiply
   3,081.83x = 4,624.57 × 1,621.10
4. Step 4: Simplify right side
   3,081.83x = 7,496,859.20
5. Step 5: Solve for x
   x = 7,496,859.20/3,081.83
6. Step 6: Final answer
   x = 2,432.60