Finding the Fourth Proportional to 667,196.09, 920,796.56 and 380,759.24

Step by Step Solution

1. Step 1: Write the proportion equation
   667,196.09 : 920,796.56 = 380,759.24 : x
2. Step 2: Convert to fraction form
   667,196.09/920,796.56 = 380,759.24/x
3. Step 3: Cross multiply
   667,196.09x = 920,796.56 × 380,759.24
4. Step 4: Simplify right side
   667,196.09x = 350,601,798,380.21
5. Step 5: Solve for x
   x = 350,601,798,380.21/667,196.09
6. Step 6: Final answer
   x = 525,485.39