Finding the Fourth Proportional to 2,175.96, 3,003.18 and 1,231.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,175.96 : 3,003.18 = 1,231.81 : x
2. Step 2: Convert to fraction form
   2,175.96/3,003.18 = 1,231.81/x
3. Step 3: Cross multiply
   2,175.96x = 3,003.18 × 1,231.81
4. Step 4: Simplify right side
   2,175.96x = 3,699,335.03
5. Step 5: Solve for x
   x = 3,699,335.03/2,175.96
6. Step 6: Final answer
   x = 1,700.09