Finding the Fourth Proportional to 2,116.02, 2,919.60 and 1,231.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.02 : 2,919.60 = 1,231.29 : x
2. Step 2: Convert to fraction form
   2,116.02/2,919.60 = 1,231.29/x
3. Step 3: Cross multiply
   2,116.02x = 2,919.60 × 1,231.29
4. Step 4: Simplify right side
   2,116.02x = 3,594,874.28
5. Step 5: Solve for x
   x = 3,594,874.28/2,116.02
6. Step 6: Final answer
   x = 1,698.88