Finding the Fourth Proportional to 2,285.42, 3,431.37 and 2,181.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,285.42 : 3,431.37 = 2,181.02 : x
2. Step 2: Convert to fraction form
   2,285.42/3,431.37 = 2,181.02/x
3. Step 3: Cross multiply
   2,285.42x = 3,431.37 × 2,181.02
4. Step 4: Simplify right side
   2,285.42x = 7,483,886.60
5. Step 5: Solve for x
   x = 7,483,886.60/2,285.42
6. Step 6: Final answer
   x = 3,274.62