Finding the Fourth Proportional to 1,578,314.86, 2,178,073.47 and 853,162.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578,314.86 : 2,178,073.47 = 853,162.56 : x
2. Step 2: Convert to fraction form
   1,578,314.86/2,178,073.47 = 853,162.56/x
3. Step 3: Cross multiply
   1,578,314.86x = 2,178,073.47 × 853,162.56
4. Step 4: Simplify right side
   1,578,314.86x = 1,858,250,748,900.42
5. Step 5: Solve for x
   x = 1,858,250,748,900.42/1,578,314.86
6. Step 6: Final answer
   x = 1,177,363.78