Finding the Fourth Proportional to 2,140,778.56, 3,211,190.88 and 644,883.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140,778.56 : 3,211,190.88 = 644,883.52 : x
2. Step 2: Convert to fraction form
   2,140,778.56/3,211,190.88 = 644,883.52/x
3. Step 3: Cross multiply
   2,140,778.56x = 3,211,190.88 × 644,883.52
4. Step 4: Simplify right side
   2,140,778.56x = 2,070,844,078,086.30
5. Step 5: Solve for x
   x = 2,070,844,078,086.30/2,140,778.56
6. Step 6: Final answer
   x = 967,332.22