Finding the Fourth Proportional to 2,105,810.28, 2,906,018.64 and 1,188,234.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,810.28 : 2,906,018.64 = 1,188,234.18 : x
2. Step 2: Convert to fraction form
   2,105,810.28/2,906,018.64 = 1,188,234.18/x
3. Step 3: Cross multiply
   2,105,810.28x = 2,906,018.64 × 1,188,234.18
4. Step 4: Simplify right side
   2,105,810.28x = 3,453,030,675,765.12
5. Step 5: Solve for x
   x = 3,453,030,675,765.12/2,105,810.28
6. Step 6: Final answer
   x = 1,639,763.42