Finding the Fourth Proportional to 2,108.46, 3,160.85 and 875.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108.46 : 3,160.85 = 875.10 : x
2. Step 2: Convert to fraction form
   2,108.46/3,160.85 = 875.10/x
3. Step 3: Cross multiply
   2,108.46x = 3,160.85 × 875.10
4. Step 4: Simplify right side
   2,108.46x = 2,766,055.46
5. Step 5: Solve for x
   x = 2,766,055.46/2,108.46
6. Step 6: Final answer
   x = 1,311.88