Finding the Fourth Proportional to 3,171,789.78, 4,377,073.98 and 1,721,485.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,171,789.78 : 4,377,073.98 = 1,721,485.08 : x
2. Step 2: Convert to fraction form
   3,171,789.78/4,377,073.98 = 1,721,485.08/x
3. Step 3: Cross multiply
   3,171,789.78x = 4,377,073.98 × 1,721,485.08
4. Step 4: Simplify right side
   3,171,789.78x = 7,535,067,550,626.22
5. Step 5: Solve for x
   x = 7,535,067,550,626.22/3,171,789.78
6. Step 6: Final answer
   x = 2,375,651.63