Finding the Fourth Proportional to 2,653.86, 3,981.87 and 1,095.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,653.86 : 3,981.87 = 1,095.15 : x
2. Step 2: Convert to fraction form
   2,653.86/3,981.87 = 1,095.15/x
3. Step 3: Cross multiply
   2,653.86x = 3,981.87 × 1,095.15
4. Step 4: Simplify right side
   2,653.86x = 4,360,744.93
5. Step 5: Solve for x
   x = 4,360,744.93/2,653.86
6. Step 6: Final answer
   x = 1,643.17