Finding the Fourth Proportional to 2,411.60, 3,326.18 and 1,643.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,411.60 : 3,326.18 = 1,643.90 : x
2. Step 2: Convert to fraction form
   2,411.60/3,326.18 = 1,643.90/x
3. Step 3: Cross multiply
   2,411.60x = 3,326.18 × 1,643.90
4. Step 4: Simplify right side
   2,411.60x = 5,467,907.30
5. Step 5: Solve for x
   x = 5,467,907.30/2,411.60
6. Step 6: Final answer
   x = 2,267.34