Finding the Fourth Proportional to 2,389.72, 3,582.75 and 1,090.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389.72 : 3,582.75 = 1,090.28 : x
2. Step 2: Convert to fraction form
   2,389.72/3,582.75 = 1,090.28/x
3. Step 3: Cross multiply
   2,389.72x = 3,582.75 × 1,090.28
4. Step 4: Simplify right side
   2,389.72x = 3,906,200.67
5. Step 5: Solve for x
   x = 3,906,200.67/2,389.72
6. Step 6: Final answer
   x = 1,634.59