Finding the Fourth Proportional to 2,007.05, 3,008.81 and 1,129.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.05 : 3,008.81 = 1,129.48 : x
2. Step 2: Convert to fraction form
   2,007.05/3,008.81 = 1,129.48/x
3. Step 3: Cross multiply
   2,007.05x = 3,008.81 × 1,129.48
4. Step 4: Simplify right side
   2,007.05x = 3,398,386.02
5. Step 5: Solve for x
   x = 3,398,386.02/2,007.05
6. Step 6: Final answer
   x = 1,693.23