Finding the Fourth Proportional to 2,619.39, 3,616.30 and 1,625.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.39 : 3,616.30 = 1,625.21 : x
2. Step 2: Convert to fraction form
   2,619.39/3,616.30 = 1,625.21/x
3. Step 3: Cross multiply
   2,619.39x = 3,616.30 × 1,625.21
4. Step 4: Simplify right side
   2,619.39x = 5,877,255.63
5. Step 5: Solve for x
   x = 5,877,255.63/2,619.39
6. Step 6: Final answer
   x = 2,243.75