Finding the Fourth Proportional to 2,662,547.76, 3,992,976 and 865,016.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662,547.76 : 3,992,976 = 865,016.01 : x
2. Step 2: Convert to fraction form
   2,662,547.76/3,992,976 = 865,016.01/x
3. Step 3: Cross multiply
   2,662,547.76x = 3,992,976 × 865,016.01
4. Step 4: Simplify right side
   2,662,547.76x = 3,453,988,167,545.76
5. Step 5: Solve for x
   x = 3,453,988,167,545.76/2,662,547.76
6. Step 6: Final answer
   x = 1,297,249.28