Finding the Fourth Proportional to 1,978,339.41, 2,949,730.70 and 1,809,438.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978,339.41 : 2,949,730.70 = 1,809,438.21 : x
2. Step 2: Convert to fraction form
   1,978,339.41/2,949,730.70 = 1,809,438.21/x
3. Step 3: Cross multiply
   1,978,339.41x = 2,949,730.70 × 1,809,438.21
4. Step 4: Simplify right side
   1,978,339.41x = 5,337,355,428,742.86
5. Step 5: Solve for x
   x = 5,337,355,428,742.86/1,978,339.41
6. Step 6: Final answer
   x = 2,697,896.73