Finding the Fourth Proportional to 2,005.34, 3,005.27 and 1,128.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,005.34 : 3,005.27 = 1,128.26 : x
2. Step 2: Convert to fraction form
   2,005.34/3,005.27 = 1,128.26/x
3. Step 3: Cross multiply
   2,005.34x = 3,005.27 × 1,128.26
4. Step 4: Simplify right side
   2,005.34x = 3,390,705.26
5. Step 5: Solve for x
   x = 3,390,705.26/2,005.34
6. Step 6: Final answer
   x = 1,690.84