Finding the Fourth Proportional to 2,108.69, 3,164.44 and 876.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108.69 : 3,164.44 = 876.10 : x
2. Step 2: Convert to fraction form
   2,108.69/3,164.44 = 876.10/x
3. Step 3: Cross multiply
   2,108.69x = 3,164.44 × 876.10
4. Step 4: Simplify right side
   2,108.69x = 2,772,345.68
5. Step 5: Solve for x
   x = 2,772,345.68/2,108.69
6. Step 6: Final answer
   x = 1,314.72