Finding the Fourth Proportional to 2,159,905.74, 2,980,414.47 and 1,192,978.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159,905.74 : 2,980,414.47 = 1,192,978.37 : x
2. Step 2: Convert to fraction form
   2,159,905.74/2,980,414.47 = 1,192,978.37/x
3. Step 3: Cross multiply
   2,159,905.74x = 2,980,414.47 × 1,192,978.37
4. Step 4: Simplify right side
   2,159,905.74x = 3,555,569,981,442.94
5. Step 5: Solve for x
   x = 3,555,569,981,442.94/2,159,905.74
6. Step 6: Final answer
   x = 1,646,169.05