Finding the Fourth Proportional to 1,040,606.16, 1,561,178.56 and 320,931.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040,606.16 : 1,561,178.56 = 320,931.96 : x
2. Step 2: Convert to fraction form
   1,040,606.16/1,561,178.56 = 320,931.96/x
3. Step 3: Cross multiply
   1,040,606.16x = 1,561,178.56 × 320,931.96
4. Step 4: Simplify right side
   1,040,606.16x = 501,032,095,170.78
5. Step 5: Solve for x
   x = 501,032,095,170.78/1,040,606.16
6. Step 6: Final answer
   x = 481,481.00