Finding the Fourth Proportional to 2,103.59, 3,156.07 and 717.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.59 : 3,156.07 = 717.81 : x
2. Step 2: Convert to fraction form
   2,103.59/3,156.07 = 717.81/x
3. Step 3: Cross multiply
   2,103.59x = 3,156.07 × 717.81
4. Step 4: Simplify right side
   2,103.59x = 2,265,447.67
5. Step 5: Solve for x
   x = 2,265,447.67/2,103.59
6. Step 6: Final answer
   x = 1,076.94