Finding the Fourth Proportional to 2,100.94, 3,149.62 and 867.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.94 : 3,149.62 = 867.58 : x
2. Step 2: Convert to fraction form
   2,100.94/3,149.62 = 867.58/x
3. Step 3: Cross multiply
   2,100.94x = 3,149.62 × 867.58
4. Step 4: Simplify right side
   2,100.94x = 2,732,537.28
5. Step 5: Solve for x
   x = 2,732,537.28/2,100.94
6. Step 6: Final answer
   x = 1,300.63