Finding the Fourth Proportional to 2,285.76, 3,146.72 and 2,181.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,285.76 : 3,146.72 = 2,181.28 : x
2. Step 2: Convert to fraction form
   2,285.76/3,146.72 = 2,181.28/x
3. Step 3: Cross multiply
   2,285.76x = 3,146.72 × 2,181.28
4. Step 4: Simplify right side
   2,285.76x = 6,863,877.40
5. Step 5: Solve for x
   x = 6,863,877.40/2,285.76
6. Step 6: Final answer
   x = 3,002.89