Finding the Fourth Proportional to 2,388.02, 3,581.62 and 1,089.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.02 : 3,581.62 = 1,089.18 : x
2. Step 2: Convert to fraction form
   2,388.02/3,581.62 = 1,089.18/x
3. Step 3: Cross multiply
   2,388.02x = 3,581.62 × 1,089.18
4. Step 4: Simplify right side
   2,388.02x = 3,901,026.15
5. Step 5: Solve for x
   x = 3,901,026.15/2,388.02
6. Step 6: Final answer
   x = 1,633.59