Finding the Fourth Proportional to 2,339.91, 3,505.95 and 1,645.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.91 : 3,505.95 = 1,645.35 : x
2. Step 2: Convert to fraction form
   2,339.91/3,505.95 = 1,645.35/x
3. Step 3: Cross multiply
   2,339.91x = 3,505.95 × 1,645.35
4. Step 4: Simplify right side
   2,339.91x = 5,768,514.83
5. Step 5: Solve for x
   x = 5,768,514.83/2,339.91
6. Step 6: Final answer
   x = 2,465.27