Finding the Fourth Proportional to 2,876.31, 3,969.38 and 2,700.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,876.31 : 3,969.38 = 2,700.12 : x
2. Step 2: Convert to fraction form
   2,876.31/3,969.38 = 2,700.12/x
3. Step 3: Cross multiply
   2,876.31x = 3,969.38 × 2,700.12
4. Step 4: Simplify right side
   2,876.31x = 10,717,788.83
5. Step 5: Solve for x
   x = 10,717,788.83/2,876.31
6. Step 6: Final answer
   x = 3,726.23