Finding the Fourth Proportional to 1,891,016.96, 2,821,776.60 and 1,687,212.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,891,016.96 : 2,821,776.60 = 1,687,212.05 : x
2. Step 2: Convert to fraction form
   1,891,016.96/2,821,776.60 = 1,687,212.05/x
3. Step 3: Cross multiply
   1,891,016.96x = 2,821,776.60 × 1,687,212.05
4. Step 4: Simplify right side
   1,891,016.96x = 4,760,935,483,698.39
5. Step 5: Solve for x
   x = 4,760,935,483,698.39/1,891,016.96
6. Step 6: Final answer
   x = 2,517,658.80