Finding the Fourth Proportional to 2,638.30, 3,641.25 and 1,590.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.30 : 3,641.25 = 1,590.94 : x
2. Step 2: Convert to fraction form
   2,638.30/3,641.25 = 1,590.94/x
3. Step 3: Cross multiply
   2,638.30x = 3,641.25 × 1,590.94
4. Step 4: Simplify right side
   2,638.30x = 5,793,010.28
5. Step 5: Solve for x
   x = 5,793,010.28/2,638.30
6. Step 6: Final answer
   x = 2,195.74