Finding the Fourth Proportional to 1,578,499.98, 2,367,013.80 and 820,137.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578,499.98 : 2,367,013.80 = 820,137.54 : x
2. Step 2: Convert to fraction form
   1,578,499.98/2,367,013.80 = 820,137.54/x
3. Step 3: Cross multiply
   1,578,499.98x = 2,367,013.80 × 820,137.54
4. Step 4: Simplify right side
   1,578,499.98x = 1,941,276,875,078.05
5. Step 5: Solve for x
   x = 1,941,276,875,078.05/1,578,499.98
6. Step 6: Final answer
   x = 1,229,823.82