Finding the Fourth Proportional to 1,012,974.89, 1,519,464.72 and 413,936.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,974.89 : 1,519,464.72 = 413,936.00 : x
2. Step 2: Convert to fraction form
   1,012,974.89/1,519,464.72 = 413,936.00/x
3. Step 3: Cross multiply
   1,012,974.89x = 1,519,464.72 × 413,936.00
4. Step 4: Simplify right side
   1,012,974.89x = 628,961,143,717.36
5. Step 5: Solve for x
   x = 628,961,143,717.36/1,012,974.89
6. Step 6: Final answer
   x = 620,904.97