Finding the Fourth Proportional to 2,100.16, 3,149.20 and 1,222.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.16 : 3,149.20 = 1,222.96 : x
2. Step 2: Convert to fraction form
   2,100.16/3,149.20 = 1,222.96/x
3. Step 3: Cross multiply
   2,100.16x = 3,149.20 × 1,222.96
4. Step 4: Simplify right side
   2,100.16x = 3,851,345.63
5. Step 5: Solve for x
   x = 3,851,345.63/2,100.16
6. Step 6: Final answer
   x = 1,833.83