Finding the Fourth Proportional to 2,231.67, 3,079.71 and 1,237.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.67 : 3,079.71 = 1,237.10 : x
2. Step 2: Convert to fraction form
   2,231.67/3,079.71 = 1,237.10/x
3. Step 3: Cross multiply
   2,231.67x = 3,079.71 × 1,237.10
4. Step 4: Simplify right side
   2,231.67x = 3,809,900.75
5. Step 5: Solve for x
   x = 3,809,900.75/2,231.67
6. Step 6: Final answer
   x = 1,707.19