Finding the Fourth Proportional to 2,107.52, 3,162.24 and 875.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.52 : 3,162.24 = 875.21 : x
2. Step 2: Convert to fraction form
   2,107.52/3,162.24 = 875.21/x
3. Step 3: Cross multiply
   2,107.52x = 3,162.24 × 875.21
4. Step 4: Simplify right side
   2,107.52x = 2,767,608.26
5. Step 5: Solve for x
   x = 2,767,608.26/2,107.52
6. Step 6: Final answer
   x = 1,313.21