Finding the Fourth Proportional to 2,155,879.40, 2,975,108.82 and 1,296,938.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155,879.40 : 2,975,108.82 = 1,296,938.12 : x
2. Step 2: Convert to fraction form
   2,155,879.40/2,975,108.82 = 1,296,938.12/x
3. Step 3: Cross multiply
   2,155,879.40x = 2,975,108.82 × 1,296,938.12
4. Step 4: Simplify right side
   2,155,879.40x = 3,858,532,039,806.22
5. Step 5: Solve for x
   x = 3,858,532,039,806.22/2,155,879.40
6. Step 6: Final answer
   x = 1,789,771.75