Finding the Fourth Proportional to 2,116.83, 3,175.94 and 1,021.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.83 : 3,175.94 = 1,021.31 : x
2. Step 2: Convert to fraction form
   2,116.83/3,175.94 = 1,021.31/x
3. Step 3: Cross multiply
   2,116.83x = 3,175.94 × 1,021.31
4. Step 4: Simplify right side
   2,116.83x = 3,243,619.28
5. Step 5: Solve for x
   x = 3,243,619.28/2,116.83
6. Step 6: Final answer
   x = 1,532.30