Finding the Fourth Proportional to 2,109.14, 3,162.88 and 875.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.14 : 3,162.88 = 875.72 : x
2. Step 2: Convert to fraction form
   2,109.14/3,162.88 = 875.72/x
3. Step 3: Cross multiply
   2,109.14x = 3,162.88 × 875.72
4. Step 4: Simplify right side
   2,109.14x = 2,769,797.27
5. Step 5: Solve for x
   x = 2,769,797.27/2,109.14
6. Step 6: Final answer
   x = 1,313.24