Finding the Fourth Proportional to 2,505.43, 3,455.76 and 1,621.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505.43 : 3,455.76 = 1,621.52 : x
2. Step 2: Convert to fraction form
   2,505.43/3,455.76 = 1,621.52/x
3. Step 3: Cross multiply
   2,505.43x = 3,455.76 × 1,621.52
4. Step 4: Simplify right side
   2,505.43x = 5,603,585.72
5. Step 5: Solve for x
   x = 5,603,585.72/2,505.43
6. Step 6: Final answer
   x = 2,236.58