Finding the Fourth Proportional to 2,116.22, 2,920.83 and 1,231.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.22 : 2,920.83 = 1,231.88 : x
2. Step 2: Convert to fraction form
   2,116.22/2,920.83 = 1,231.88/x
3. Step 3: Cross multiply
   2,116.22x = 2,920.83 × 1,231.88
4. Step 4: Simplify right side
   2,116.22x = 3,598,112.06
5. Step 5: Solve for x
   x = 3,598,112.06/2,116.22
6. Step 6: Final answer
   x = 1,700.25