Finding the Fourth Proportional to 1,019,441.09, 1,407,042.74 and 646,662.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019,441.09 : 1,407,042.74 = 646,662.89 : x
2. Step 2: Convert to fraction form
   1,019,441.09/1,407,042.74 = 646,662.89/x
3. Step 3: Cross multiply
   1,019,441.09x = 1,407,042.74 × 646,662.89
4. Step 4: Simplify right side
   1,019,441.09x = 909,882,314,333.39
5. Step 5: Solve for x
   x = 909,882,314,333.39/1,019,441.09
6. Step 6: Final answer
   x = 892,530.55