Finding the Fourth Proportional to 2,643.10, 3,964.36 and 1,062.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.10 : 3,964.36 = 1,062.50 : x
2. Step 2: Convert to fraction form
   2,643.10/3,964.36 = 1,062.50/x
3. Step 3: Cross multiply
   2,643.10x = 3,964.36 × 1,062.50
4. Step 4: Simplify right side
   2,643.10x = 4,212,132.50
5. Step 5: Solve for x
   x = 4,212,132.50/2,643.10
6. Step 6: Final answer
   x = 1,593.63