Finding the Fourth Proportional to 2,644.88, 3,646.89 and 2,145.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,644.88 : 3,646.89 = 2,145.98 : x
2. Step 2: Convert to fraction form
   2,644.88/3,646.89 = 2,145.98/x
3. Step 3: Cross multiply
   2,644.88x = 3,646.89 × 2,145.98
4. Step 4: Simplify right side
   2,644.88x = 7,826,153.00
5. Step 5: Solve for x
   x = 7,826,153.00/2,644.88
6. Step 6: Final answer
   x = 2,958.98