Finding the Fourth Proportional to 1,578,849.89, 2,178,814.38 and 853,697.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578,849.89 : 2,178,814.38 = 853,697.42 : x
2. Step 2: Convert to fraction form
   1,578,849.89/2,178,814.38 = 853,697.42/x
3. Step 3: Cross multiply
   1,578,849.89x = 2,178,814.38 × 853,697.42
4. Step 4: Simplify right side
   1,578,849.89x = 1,860,048,214,864.90
5. Step 5: Solve for x
   x = 1,860,048,214,864.90/1,578,849.89
6. Step 6: Final answer
   x = 1,178,103.27