Finding the Fourth Proportional to 2,390.90, 3,581.31 and 1,093.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.90 : 3,581.31 = 1,093.46 : x
2. Step 2: Convert to fraction form
   2,390.90/3,581.31 = 1,093.46/x
3. Step 3: Cross multiply
   2,390.90x = 3,581.31 × 1,093.46
4. Step 4: Simplify right side
   2,390.90x = 3,916,019.23
5. Step 5: Solve for x
   x = 3,916,019.23/2,390.90
6. Step 6: Final answer
   x = 1,637.88