Finding the Fourth Proportional to 1,628,456.89, 2,438,824.05 and 1,290,410.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,628,456.89 : 2,438,824.05 = 1,290,410.56 : x
2. Step 2: Convert to fraction form
   1,628,456.89/2,438,824.05 = 1,290,410.56/x
3. Step 3: Cross multiply
   1,628,456.89x = 2,438,824.05 × 1,290,410.56
4. Step 4: Simplify right side
   1,628,456.89x = 3,147,084,308,101.97
5. Step 5: Solve for x
   x = 3,147,084,308,101.97/1,628,456.89
6. Step 6: Final answer
   x = 1,932,556.11