Finding the Fourth Proportional to 3,171,786.78, 4,377,069.86 and 1,721,482.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,171,786.78 : 4,377,069.86 = 1,721,482.05 : x
2. Step 2: Convert to fraction form
   3,171,786.78/4,377,069.86 = 1,721,482.05/x
3. Step 3: Cross multiply
   3,171,786.78x = 4,377,069.86 × 1,721,482.05
4. Step 4: Simplify right side
   3,171,786.78x = 7,535,047,186,978.60
5. Step 5: Solve for x
   x = 7,535,047,186,978.60/3,171,786.78
6. Step 6: Final answer
   x = 2,375,647.45