Finding the Fourth Proportional to 2,645.06, 3,961.31 and 2,095.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,645.06 : 3,961.31 = 2,095.47 : x
2. Step 2: Convert to fraction form
   2,645.06/3,961.31 = 2,095.47/x
3. Step 3: Cross multiply
   2,645.06x = 3,961.31 × 2,095.47
4. Step 4: Simplify right side
   2,645.06x = 8,300,795.79
5. Step 5: Solve for x
   x = 8,300,795.79/2,645.06
6. Step 6: Final answer
   x = 3,138.23