Finding the Fourth Proportional to 1,578,847.89, 2,178,811.62 and 853,695.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578,847.89 : 2,178,811.62 = 853,695.42 : x
2. Step 2: Convert to fraction form
   1,578,847.89/2,178,811.62 = 853,695.42/x
3. Step 3: Cross multiply
   1,578,847.89x = 2,178,811.62 × 853,695.42
4. Step 4: Simplify right side
   1,578,847.89x = 1,860,041,501,036.78
5. Step 5: Solve for x
   x = 1,860,041,501,036.78/1,578,847.89
6. Step 6: Final answer
   x = 1,178,100.51