Finding the Fourth Proportional to 3,181.02, 4,765.32 and 2,191.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,181.02 : 4,765.32 = 2,191.50 : x
2. Step 2: Convert to fraction form
   3,181.02/4,765.32 = 2,191.50/x
3. Step 3: Cross multiply
   3,181.02x = 4,765.32 × 2,191.50
4. Step 4: Simplify right side
   3,181.02x = 10,443,198.78
5. Step 5: Solve for x
   x = 10,443,198.78/3,181.02
6. Step 6: Final answer
   x = 3,282.97