Finding the Fourth Proportional to 3,181.89, 4,390.43 and 1,922.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,181.89 : 4,390.43 = 1,922.10 : x
2. Step 2: Convert to fraction form
   3,181.89/4,390.43 = 1,922.10/x
3. Step 3: Cross multiply
   3,181.89x = 4,390.43 × 1,922.10
4. Step 4: Simplify right side
   3,181.89x = 8,438,835.89
5. Step 5: Solve for x
   x = 8,438,835.89/3,181.89
6. Step 6: Final answer
   x = 2,652.15