Finding the Fourth Proportional to 2,389.02, 3,583.12 and 1,090.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389.02 : 3,583.12 = 1,090.18 : x
2. Step 2: Convert to fraction form
   2,389.02/3,583.12 = 1,090.18/x
3. Step 3: Cross multiply
   2,389.02x = 3,583.12 × 1,090.18
4. Step 4: Simplify right side
   2,389.02x = 3,906,245.76
5. Step 5: Solve for x
   x = 3,906,245.76/2,389.02
6. Step 6: Final answer
   x = 1,635.08