Finding the Fourth Proportional to 2,644.29, 3,965.86 and 1,083.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,644.29 : 3,965.86 = 1,083.89 : x
2. Step 2: Convert to fraction form
   2,644.29/3,965.86 = 1,083.89/x
3. Step 3: Cross multiply
   2,644.29x = 3,965.86 × 1,083.89
4. Step 4: Simplify right side
   2,644.29x = 4,298,556.00
5. Step 5: Solve for x
   x = 4,298,556.00/2,644.29
6. Step 6: Final answer
   x = 1,625.60