Finding the Fourth Proportional to 2,118.98, 3,175.71 and 1,021.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.98 : 3,175.71 = 1,021.10 : x
2. Step 2: Convert to fraction form
   2,118.98/3,175.71 = 1,021.10/x
3. Step 3: Cross multiply
   2,118.98x = 3,175.71 × 1,021.10
4. Step 4: Simplify right side
   2,118.98x = 3,242,717.48
5. Step 5: Solve for x
   x = 3,242,717.48/2,118.98
6. Step 6: Final answer
   x = 1,530.32