Finding the Fourth Proportional to 1,643.89, 2,453.84 and 1,436.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,643.89 : 2,453.84 = 1,436.29 : x
2. Step 2: Convert to fraction form
   1,643.89/2,453.84 = 1,436.29/x
3. Step 3: Cross multiply
   1,643.89x = 2,453.84 × 1,436.29
4. Step 4: Simplify right side
   1,643.89x = 3,524,432.51
5. Step 5: Solve for x
   x = 3,524,432.51/1,643.89
6. Step 6: Final answer
   x = 2,143.96