Finding the Fourth Proportional to 3,411.90, 5,118.93 and 2,114.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,411.90 : 5,118.93 = 2,114.28 : x
2. Step 2: Convert to fraction form
   3,411.90/5,118.93 = 2,114.28/x
3. Step 3: Cross multiply
   3,411.90x = 5,118.93 × 2,114.28
4. Step 4: Simplify right side
   3,411.90x = 10,822,851.32
5. Step 5: Solve for x
   x = 10,822,851.32/3,411.90
6. Step 6: Final answer
   x = 3,172.09