Finding the Fourth Proportional to 2,105,843.28, 2,906,064.24 and 1,188,267.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,843.28 : 2,906,064.24 = 1,188,267.12 : x
2. Step 2: Convert to fraction form
   2,105,843.28/2,906,064.24 = 1,188,267.12/x
3. Step 3: Cross multiply
   2,105,843.28x = 2,906,064.24 × 1,188,267.12
4. Step 4: Simplify right side
   2,105,843.28x = 3,453,180,584,999.79
5. Step 5: Solve for x
   x = 3,453,180,584,999.79/2,105,843.28
6. Step 6: Final answer
   x = 1,639,808.92