Finding the Fourth Proportional to 3,992,426.50, 5,990,355.88 and 1,297,578.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,992,426.50 : 5,990,355.88 = 1,297,578.10 : x
2. Step 2: Convert to fraction form
   3,992,426.50/5,990,355.88 = 1,297,578.10/x
3. Step 3: Cross multiply
   3,992,426.50x = 5,990,355.88 × 1,297,578.10
4. Step 4: Simplify right side
   3,992,426.50x = 7,772,954,601,094.23
5. Step 5: Solve for x
   x = 7,772,954,601,094.23/3,992,426.50
6. Step 6: Final answer
   x = 1,946,924.91