Finding the Fourth Proportional to 2,142,978.40, 3,211,843.20 and 943,627.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142,978.40 : 3,211,843.20 = 943,627.60 : x
2. Step 2: Convert to fraction form
   2,142,978.40/3,211,843.20 = 943,627.60/x
3. Step 3: Cross multiply
   2,142,978.40x = 3,211,843.20 × 943,627.60
4. Step 4: Simplify right side
   2,142,978.40x = 3,030,783,890,392.32
5. Step 5: Solve for x
   x = 3,030,783,890,392.32/2,142,978.40
6. Step 6: Final answer
   x = 1,414,285.79