Finding the Fourth Proportional to 2,643.34, 3,647.71 and 1,580.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.34 : 3,647.71 = 1,580.48 : x
2. Step 2: Convert to fraction form
   2,643.34/3,647.71 = 1,580.48/x
3. Step 3: Cross multiply
   2,643.34x = 3,647.71 × 1,580.48
4. Step 4: Simplify right side
   2,643.34x = 5,765,135.43
5. Step 5: Solve for x
   x = 5,765,135.43/2,643.34
6. Step 6: Final answer
   x = 2,181.00