Finding the Fourth Proportional to 1,187,003.24, 1,638,144.83 and 670,578.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,187,003.24 : 1,638,144.83 = 670,578.02 : x
2. Step 2: Convert to fraction form
   1,187,003.24/1,638,144.83 = 670,578.02/x
3. Step 3: Cross multiply
   1,187,003.24x = 1,638,144.83 × 670,578.02
4. Step 4: Simplify right side
   1,187,003.24x = 1,098,503,910,060.36
5. Step 5: Solve for x
   x = 1,098,503,910,060.36/1,187,003.24
6. Step 6: Final answer
   x = 925,443.06