Finding the Fourth Proportional to 2,100.52, 3,150.85 and 867.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.52 : 3,150.85 = 867.22 : x
2. Step 2: Convert to fraction form
   2,100.52/3,150.85 = 867.22/x
3. Step 3: Cross multiply
   2,100.52x = 3,150.85 × 867.22
4. Step 4: Simplify right side
   2,100.52x = 2,732,480.14
5. Step 5: Solve for x
   x = 2,732,480.14/2,100.52
6. Step 6: Final answer
   x = 1,300.86