Finding the Fourth Proportional to 2,103.81, 3,155.05 and 716.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.81 : 3,155.05 = 716.91 : x
2. Step 2: Convert to fraction form
   2,103.81/3,155.05 = 716.91/x
3. Step 3: Cross multiply
   2,103.81x = 3,155.05 × 716.91
4. Step 4: Simplify right side
   2,103.81x = 2,261,886.90
5. Step 5: Solve for x
   x = 2,261,886.90/2,103.81
6. Step 6: Final answer
   x = 1,075.14