Finding the Fourth Proportional to 2,143,984.01, 3,215,484.86 and 1,279,662.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143,984.01 : 3,215,484.86 = 1,279,662.78 : x
2. Step 2: Convert to fraction form
   2,143,984.01/3,215,484.86 = 1,279,662.78/x
3. Step 3: Cross multiply
   2,143,984.01x = 3,215,484.86 × 1,279,662.78
4. Step 4: Simplify right side
   2,143,984.01x = 4,114,736,288,597.20
5. Step 5: Solve for x
   x = 4,114,736,288,597.20/2,143,984.01
6. Step 6: Final answer
   x = 1,919,201.01