Finding the Fourth Proportional to 2,107.86, 3,162.59 and 875.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.86 : 3,162.59 = 875.18 : x
2. Step 2: Convert to fraction form
   2,107.86/3,162.59 = 875.18/x
3. Step 3: Cross multiply
   2,107.86x = 3,162.59 × 875.18
4. Step 4: Simplify right side
   2,107.86x = 2,767,815.33
5. Step 5: Solve for x
   x = 2,767,815.33/2,107.86
6. Step 6: Final answer
   x = 1,313.09