Finding the Fourth Proportional to 2,885.82, 3,979.76 and 2,141.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,885.82 : 3,979.76 = 2,141.63 : x
2. Step 2: Convert to fraction form
   2,885.82/3,979.76 = 2,141.63/x
3. Step 3: Cross multiply
   2,885.82x = 3,979.76 × 2,141.63
4. Step 4: Simplify right side
   2,885.82x = 8,523,173.41
5. Step 5: Solve for x
   x = 8,523,173.41/2,885.82
6. Step 6: Final answer
   x = 2,953.47