Finding the Fourth Proportional to 2,005.84, 3,006.01 and 1,128.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,005.84 : 3,006.01 = 1,128.76 : x
2. Step 2: Convert to fraction form
   2,005.84/3,006.01 = 1,128.76/x
3. Step 3: Cross multiply
   2,005.84x = 3,006.01 × 1,128.76
4. Step 4: Simplify right side
   2,005.84x = 3,393,063.85
5. Step 5: Solve for x
   x = 3,393,063.85/2,005.84
6. Step 6: Final answer
   x = 1,691.59