Finding the Fourth Proportional to 2,790.42, 4,181.98 and 2,091.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,790.42 : 4,181.98 = 2,091.59 : x
2. Step 2: Convert to fraction form
   2,790.42/4,181.98 = 2,091.59/x
3. Step 3: Cross multiply
   2,790.42x = 4,181.98 × 2,091.59
4. Step 4: Simplify right side
   2,790.42x = 8,746,987.55
5. Step 5: Solve for x
   x = 8,746,987.55/2,790.42
6. Step 6: Final answer
   x = 3,134.65