Finding the Fourth Proportional to 2,106.03, 3,155.55 and 1,281.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.03 : 3,155.55 = 1,281.81 : x
2. Step 2: Convert to fraction form
   2,106.03/3,155.55 = 1,281.81/x
3. Step 3: Cross multiply
   2,106.03x = 3,155.55 × 1,281.81
4. Step 4: Simplify right side
   2,106.03x = 4,044,815.55
5. Step 5: Solve for x
   x = 4,044,815.55/2,106.03
6. Step 6: Final answer
   x = 1,920.59