Finding the Fourth Proportional to 2,007.56, 3,008.86 and 1,139.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.56 : 3,008.86 = 1,139.24 : x
2. Step 2: Convert to fraction form
   2,007.56/3,008.86 = 1,139.24/x
3. Step 3: Cross multiply
   2,007.56x = 3,008.86 × 1,139.24
4. Step 4: Simplify right side
   2,007.56x = 3,427,813.67
5. Step 5: Solve for x
   x = 3,427,813.67/2,007.56
6. Step 6: Final answer
   x = 1,707.45