Finding the Fourth Proportional to 2,005.63, 3,005.03 and 1,127.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,005.63 : 3,005.03 = 1,127.79 : x
2. Step 2: Convert to fraction form
   2,005.63/3,005.03 = 1,127.79/x
3. Step 3: Cross multiply
   2,005.63x = 3,005.03 × 1,127.79
4. Step 4: Simplify right side
   2,005.63x = 3,389,042.78
5. Step 5: Solve for x
   x = 3,389,042.78/2,005.63
6. Step 6: Final answer
   x = 1,689.76