Finding the Fourth Proportional to 2,100.05, 3,149.02 and 1,222.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.05 : 3,149.02 = 1,222.84 : x
2. Step 2: Convert to fraction form
   2,100.05/3,149.02 = 1,222.84/x
3. Step 3: Cross multiply
   2,100.05x = 3,149.02 × 1,222.84
4. Step 4: Simplify right side
   2,100.05x = 3,850,725.76
5. Step 5: Solve for x
   x = 3,850,725.76/2,100.05
6. Step 6: Final answer
   x = 1,833.64