Finding the Fourth Proportional to 2,110.09, 3,161.71 and 1,285.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,110.09 : 3,161.71 = 1,285.86 : x
2. Step 2: Convert to fraction form
   2,110.09/3,161.71 = 1,285.86/x
3. Step 3: Cross multiply
   2,110.09x = 3,161.71 × 1,285.86
4. Step 4: Simplify right side
   2,110.09x = 4,065,516.42
5. Step 5: Solve for x
   x = 4,065,516.42/2,110.09
6. Step 6: Final answer
   x = 1,926.70