Finding the Fourth Proportional to 2,379,770.78, 3,571,074.59 and 863,572.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379,770.78 : 3,571,074.59 = 863,572.01 : x
2. Step 2: Convert to fraction form
   2,379,770.78/3,571,074.59 = 863,572.01/x
3. Step 3: Cross multiply
   2,379,770.78x = 3,571,074.59 × 863,572.01
4. Step 4: Simplify right side
   2,379,770.78x = 3,083,880,039,372.99
5. Step 5: Solve for x
   x = 3,083,880,039,372.99/2,379,770.78
6. Step 6: Final answer
   x = 1,295,872.73