Finding the Fourth Proportional to 2,886.72, 3,985.56 and 2,222.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,886.72 : 3,985.56 = 2,222.34 : x
2. Step 2: Convert to fraction form
   2,886.72/3,985.56 = 2,222.34/x
3. Step 3: Cross multiply
   2,886.72x = 3,985.56 × 2,222.34
4. Step 4: Simplify right side
   2,886.72x = 8,857,269.41
5. Step 5: Solve for x
   x = 8,857,269.41/2,886.72
6. Step 6: Final answer
   x = 3,068.28