Finding the Fourth Proportional to 2,117,145.69, 3,175,780.77 and 519,708.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,117,145.69 : 3,175,780.77 = 519,708.71 : x
2. Step 2: Convert to fraction form
   2,117,145.69/3,175,780.77 = 519,708.71/x
3. Step 3: Cross multiply
   2,117,145.69x = 3,175,780.77 × 519,708.71
4. Step 4: Simplify right side
   2,117,145.69x = 1,650,480,935,158.96
5. Step 5: Solve for x
   x = 1,650,480,935,158.96/2,117,145.69
6. Step 6: Final answer
   x = 779,578.35