Finding the Fourth Proportional to 2,590.92, 3,577.50 and 2,091.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590.92 : 3,577.50 = 2,091.96 : x
2. Step 2: Convert to fraction form
   2,590.92/3,577.50 = 2,091.96/x
3. Step 3: Cross multiply
   2,590.92x = 3,577.50 × 2,091.96
4. Step 4: Simplify right side
   2,590.92x = 7,483,986.90
5. Step 5: Solve for x
   x = 7,483,986.90/2,590.92
6. Step 6: Final answer
   x = 2,888.54