Finding the Fourth Proportional to 3,171,995.15, 4,377,357.72 and 1,721,690.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,171,995.15 : 4,377,357.72 = 1,721,690.89 : x
2. Step 2: Convert to fraction form
   3,171,995.15/4,377,357.72 = 1,721,690.89/x
3. Step 3: Cross multiply
   3,171,995.15x = 4,377,357.72 × 1,721,690.89
4. Step 4: Simplify right side
   3,171,995.15x = 7,536,456,897,851.78
5. Step 5: Solve for x
   x = 7,536,456,897,851.78/3,171,995.15
6. Step 6: Final answer
   x = 2,375,935.82