Finding the Fourth Proportional to 2,181.27, 3,010.15 and 1,186.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.27 : 3,010.15 = 1,186.55 : x
2. Step 2: Convert to fraction form
   2,181.27/3,010.15 = 1,186.55/x
3. Step 3: Cross multiply
   2,181.27x = 3,010.15 × 1,186.55
4. Step 4: Simplify right side
   2,181.27x = 3,571,693.48
5. Step 5: Solve for x
   x = 3,571,693.48/2,181.27
6. Step 6: Final answer
   x = 1,637.44