Finding the Fourth Proportional to 3,111.71, 4,291.32 and 2,061.95

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.71 : 4,291.32 = 2,061.95 : x
2. Step 2: Convert to fraction form
   3,111.71/4,291.32 = 2,061.95/x
3. Step 3: Cross multiply
   3,111.71x = 4,291.32 × 2,061.95
4. Step 4: Simplify right side
   3,111.71x = 8,848,465.82
5. Step 5: Solve for x
   x = 8,848,465.82/3,111.71
6. Step 6: Final answer
   x = 2,843.61