Finding the Fourth Proportional to 2,016.39, 3,025.35 and 1,090.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.39 : 3,025.35 = 1,090.87 : x
2. Step 2: Convert to fraction form
   2,016.39/3,025.35 = 1,090.87/x
3. Step 3: Cross multiply
   2,016.39x = 3,025.35 × 1,090.87
4. Step 4: Simplify right side
   2,016.39x = 3,300,255.99
5. Step 5: Solve for x
   x = 3,300,255.99/2,016.39
6. Step 6: Final answer
   x = 1,636.71