Finding the Fourth Proportional to 2,008.69, 3,007.84 and 1,385.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,008.69 : 3,007.84 = 1,385.90 : x
2. Step 2: Convert to fraction form
   2,008.69/3,007.84 = 1,385.90/x
3. Step 3: Cross multiply
   2,008.69x = 3,007.84 × 1,385.90
4. Step 4: Simplify right side
   2,008.69x = 4,168,571.39
5. Step 5: Solve for x
   x = 4,168,571.39/2,008.69
6. Step 6: Final answer
   x = 2,075.27