Finding the Fourth Proportional to 2,009.05, 3,013.86 and 622.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,009.05 : 3,013.86 = 622.49 : x
2. Step 2: Convert to fraction form
   2,009.05/3,013.86 = 622.49/x
3. Step 3: Cross multiply
   2,009.05x = 3,013.86 × 622.49
4. Step 4: Simplify right side
   2,009.05x = 1,876,094.60
5. Step 5: Solve for x
   x = 1,876,094.60/2,009.05
6. Step 6: Final answer
   x = 933.82