Finding the Fourth Proportional to 2,105,897.67, 2,906,139.33 and 1,188,321.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,897.67 : 2,906,139.33 = 1,188,321.27 : x
2. Step 2: Convert to fraction form
   2,105,897.67/2,906,139.33 = 1,188,321.27/x
3. Step 3: Cross multiply
   2,105,897.67x = 2,906,139.33 × 1,188,321.27
4. Step 4: Simplify right side
   2,105,897.67x = 3,453,427,179,422.55
5. Step 5: Solve for x
   x = 3,453,427,179,422.55/2,105,897.67
6. Step 6: Final answer
   x = 1,639,883.66