Finding the Fourth Proportional to 2,380,499.70, 3,571,077.60 and 863,815.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380,499.70 : 3,571,077.60 = 863,815.20 : x
2. Step 2: Convert to fraction form
   2,380,499.70/3,571,077.60 = 863,815.20/x
3. Step 3: Cross multiply
   2,380,499.70x = 3,571,077.60 × 863,815.20
4. Step 4: Simplify right side
   2,380,499.70x = 3,084,751,111,259.52
5. Step 5: Solve for x
   x = 3,084,751,111,259.52/2,380,499.70
6. Step 6: Final answer
   x = 1,295,841.84