Finding the Fourth Proportional to 1,643.10, 2,443.04 and 1,643.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,643.10 : 2,443.04 = 1,643.10 : x
2. Step 2: Convert to fraction form
   1,643.10/2,443.04 = 1,643.10/x
3. Step 3: Cross multiply
   1,643.10x = 2,443.04 × 1,643.10
4. Step 4: Simplify right side
   1,643.10x = 4,014,150.81
5. Step 5: Solve for x
   x = 4,014,150.81/1,643.10
6. Step 6: Final answer
   x = 2,443.04