Finding the Fourth Proportional to 2,100.72, 3,150.04 and 867.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.72 : 3,150.04 = 867.68 : x
2. Step 2: Convert to fraction form
   2,100.72/3,150.04 = 867.68/x
3. Step 3: Cross multiply
   2,100.72x = 3,150.04 × 867.68
4. Step 4: Simplify right side
   2,100.72x = 2,733,226.71
5. Step 5: Solve for x
   x = 2,733,226.71/2,100.72
6. Step 6: Final answer
   x = 1,301.09