Finding the Fourth Proportional to 1,200,763.78, 1,801,145.31 and 452,634.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,763.78 : 1,801,145.31 = 452,634.82 : x
2. Step 2: Convert to fraction form
   1,200,763.78/1,801,145.31 = 452,634.82/x
3. Step 3: Cross multiply
   1,200,763.78x = 1,801,145.31 × 452,634.82
4. Step 4: Simplify right side
   1,200,763.78x = 815,261,083,185.69
5. Step 5: Solve for x
   x = 815,261,083,185.69/1,200,763.78
6. Step 6: Final answer
   x = 678,952.09