Finding the Fourth Proportional to 2,109.29, 3,164.75 and 876.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.29 : 3,164.75 = 876.38 : x
2. Step 2: Convert to fraction form
   2,109.29/3,164.75 = 876.38/x
3. Step 3: Cross multiply
   2,109.29x = 3,164.75 × 876.38
4. Step 4: Simplify right side
   2,109.29x = 2,773,503.40
5. Step 5: Solve for x
   x = 2,773,503.40/2,109.29
6. Step 6: Final answer
   x = 1,314.90