Finding the Fourth Proportional to 919,674.83, 1,377,518.42 and 445,365.56

Step by Step Solution

1. Step 1: Write the proportion equation
   919,674.83 : 1,377,518.42 = 445,365.56 : x
2. Step 2: Convert to fraction form
   919,674.83/1,377,518.42 = 445,365.56/x
3. Step 3: Cross multiply
   919,674.83x = 1,377,518.42 × 445,365.56
4. Step 4: Simplify right side
   919,674.83x = 613,499,267,090.83
5. Step 5: Solve for x
   x = 613,499,267,090.83/919,674.83
6. Step 6: Final answer
   x = 667,082.81