Finding the Fourth Proportional to 2,008.89, 3,013.40 and 622.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,008.89 : 3,013.40 = 622.10 : x
2. Step 2: Convert to fraction form
   2,008.89/3,013.40 = 622.10/x
3. Step 3: Cross multiply
   2,008.89x = 3,013.40 × 622.10
4. Step 4: Simplify right side
   2,008.89x = 1,874,619.52
5. Step 5: Solve for x
   x = 1,874,619.52/2,008.89
6. Step 6: Final answer
   x = 933.16