Finding the Fourth Proportional to 2,886.98, 3,986.69 and 2,572.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,886.98 : 3,986.69 = 2,572.29 : x
2. Step 2: Convert to fraction form
   2,886.98/3,986.69 = 2,572.29/x
3. Step 3: Cross multiply
   2,886.98x = 3,986.69 × 2,572.29
4. Step 4: Simplify right side
   2,886.98x = 10,254,909.96
5. Step 5: Solve for x
   x = 10,254,909.96/2,886.98
6. Step 6: Final answer
   x = 3,552.13