Finding the Fourth Proportional to 2,817.12, 3,885.28 and 2,061.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,817.12 : 3,885.28 = 2,061.84 : x
2. Step 2: Convert to fraction form
   2,817.12/3,885.28 = 2,061.84/x
3. Step 3: Cross multiply
   2,817.12x = 3,885.28 × 2,061.84
4. Step 4: Simplify right side
   2,817.12x = 8,010,825.72
5. Step 5: Solve for x
   x = 8,010,825.72/2,817.12
6. Step 6: Final answer
   x = 2,843.62