Finding the Fourth Proportional to 1,670,389.50, 2,305,137.50 and 906,443.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,670,389.50 : 2,305,137.50 = 906,443.06 : x
2. Step 2: Convert to fraction form
   1,670,389.50/2,305,137.50 = 906,443.06/x
3. Step 3: Cross multiply
   1,670,389.50x = 2,305,137.50 × 906,443.06
4. Step 4: Simplify right side
   1,670,389.50x = 2,089,475,873,162.85
5. Step 5: Solve for x
   x = 2,089,475,873,162.85/1,670,389.50
6. Step 6: Final answer
   x = 1,250,891.41