Finding the Fourth Proportional to 2,231.86, 3,080.12 and 1,237.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.86 : 3,080.12 = 1,237.18 : x
2. Step 2: Convert to fraction form
   2,231.86/3,080.12 = 1,237.18/x
3. Step 3: Cross multiply
   2,231.86x = 3,080.12 × 1,237.18
4. Step 4: Simplify right side
   2,231.86x = 3,810,662.86
5. Step 5: Solve for x
   x = 3,810,662.86/2,231.86
6. Step 6: Final answer
   x = 1,707.39