Finding the Fourth Proportional to 2,638.76, 3,641.46 and 1,590.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.76 : 3,641.46 = 1,590.92 : x
2. Step 2: Convert to fraction form
   2,638.76/3,641.46 = 1,590.92/x
3. Step 3: Cross multiply
   2,638.76x = 3,641.46 × 1,590.92
4. Step 4: Simplify right side
   2,638.76x = 5,793,271.54
5. Step 5: Solve for x
   x = 5,793,271.54/2,638.76
6. Step 6: Final answer
   x = 2,195.45