Finding the Fourth Proportional to 2,407, 3,604.38 and 2,185.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,407 : 3,604.38 = 2,185.12 : x
2. Step 2: Convert to fraction form
   2,407/3,604.38 = 2,185.12/x
3. Step 3: Cross multiply
   2,407x = 3,604.38 × 2,185.12
4. Step 4: Simplify right side
   2,407x = 7,876,002.83
5. Step 5: Solve for x
   x = 7,876,002.83/2,407
6. Step 6: Final answer
   x = 3,272.12