Finding the Fourth Proportional to 2,150,978.10, 3,225,689.55 and 1,085,666.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150,978.10 : 3,225,689.55 = 1,085,666.10 : x
2. Step 2: Convert to fraction form
   2,150,978.10/3,225,689.55 = 1,085,666.10/x
3. Step 3: Cross multiply
   2,150,978.10x = 3,225,689.55 × 1,085,666.10
4. Step 4: Simplify right side
   2,150,978.10x = 3,502,021,793,559.26
5. Step 5: Solve for x
   x = 3,502,021,793,559.26/2,150,978.10
6. Step 6: Final answer
   x = 1,628,106.67