Finding the Fourth Proportional to 3,109.86, 4,641.91 and 2,740.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.86 : 4,641.91 = 2,740.77 : x
2. Step 2: Convert to fraction form
   3,109.86/4,641.91 = 2,740.77/x
3. Step 3: Cross multiply
   3,109.86x = 4,641.91 × 2,740.77
4. Step 4: Simplify right side
   3,109.86x = 12,722,400.82
5. Step 5: Solve for x
   x = 12,722,400.82/3,109.86
6. Step 6: Final answer
   x = 4,090.99