Finding the Fourth Proportional to 2,194.80, 3,028.82 and 1,355.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,194.80 : 3,028.82 = 1,355.31 : x
2. Step 2: Convert to fraction form
   2,194.80/3,028.82 = 1,355.31/x
3. Step 3: Cross multiply
   2,194.80x = 3,028.82 × 1,355.31
4. Step 4: Simplify right side
   2,194.80x = 4,104,983.26
5. Step 5: Solve for x
   x = 4,104,983.26/2,194.80
6. Step 6: Final answer
   x = 1,870.32