Finding the Fourth Proportional to 2,229,849, 3,077,141.40 and 1,299,499.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,229,849 : 3,077,141.40 = 1,299,499.20 : x
2. Step 2: Convert to fraction form
   2,229,849/3,077,141.40 = 1,299,499.20/x
3. Step 3: Cross multiply
   2,229,849x = 3,077,141.40 × 1,299,499.20
4. Step 4: Simplify right side
   2,229,849x = 3,998,742,787,586.88
5. Step 5: Solve for x
   x = 3,998,742,787,586.88/2,229,849
6. Step 6: Final answer
   x = 1,793,279.63