Finding the Fourth Proportional to 682,906.56, 942,505.98 and 381,120

Step by Step Solution

1. Step 1: Write the proportion equation
   682,906.56 : 942,505.98 = 381,120 : x
2. Step 2: Convert to fraction form
   682,906.56/942,505.98 = 381,120/x
3. Step 3: Cross multiply
   682,906.56x = 942,505.98 × 381,120
4. Step 4: Simplify right side
   682,906.56x = 359,207,879,097.60
5. Step 5: Solve for x
   x = 359,207,879,097.60/682,906.56
6. Step 6: Final answer
   x = 525,998.58