Finding the Fourth Proportional to 2,445.91, 3,682.59 and 2,155.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,445.91 : 3,682.59 = 2,155.22 : x
2. Step 2: Convert to fraction form
   2,445.91/3,682.59 = 2,155.22/x
3. Step 3: Cross multiply
   2,445.91x = 3,682.59 × 2,155.22
4. Step 4: Simplify right side
   2,445.91x = 7,936,790.17
5. Step 5: Solve for x
   x = 7,936,790.17/2,445.91
6. Step 6: Final answer
   x = 3,244.92