Finding the Fourth Proportional to 2,231.89, 3,080.13 and 1,237.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.89 : 3,080.13 = 1,237.15 : x
2. Step 2: Convert to fraction form
   2,231.89/3,080.13 = 1,237.15/x
3. Step 3: Cross multiply
   2,231.89x = 3,080.13 × 1,237.15
4. Step 4: Simplify right side
   2,231.89x = 3,810,582.83
5. Step 5: Solve for x
   x = 3,810,582.83/2,231.89
6. Step 6: Final answer
   x = 1,707.33