Finding the Fourth Proportional to 2,105,993.74, 2,906,021.29 and 1,188,169.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,993.74 : 2,906,021.29 = 1,188,169.31 : x
2. Step 2: Convert to fraction form
   2,105,993.74/2,906,021.29 = 1,188,169.31/x
3. Step 3: Cross multiply
   2,105,993.74x = 2,906,021.29 × 1,188,169.31
4. Step 4: Simplify right side
   2,105,993.74x = 3,452,845,301,160.69
5. Step 5: Solve for x
   x = 3,452,845,301,160.69/2,105,993.74
6. Step 6: Final answer
   x = 1,639,532.56