Finding the Fourth Proportional to 3,081.52, 4,624.16 and 1,621.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,081.52 : 4,624.16 = 1,621.72 : x
2. Step 2: Convert to fraction form
   3,081.52/4,624.16 = 1,621.72/x
3. Step 3: Cross multiply
   3,081.52x = 4,624.16 × 1,621.72
4. Step 4: Simplify right side
   3,081.52x = 7,499,092.76
5. Step 5: Solve for x
   x = 7,499,092.76/3,081.52
6. Step 6: Final answer
   x = 2,433.57