Finding the Fourth Proportional to 2,100,811.56, 3,150,556.38 and 680,538.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100,811.56 : 3,150,556.38 = 680,538.12 : x
2. Step 2: Convert to fraction form
   2,100,811.56/3,150,556.38 = 680,538.12/x
3. Step 3: Cross multiply
   2,100,811.56x = 3,150,556.38 × 680,538.12
4. Step 4: Simplify right side
   2,100,811.56x = 2,144,073,715,799.21
5. Step 5: Solve for x
   x = 2,144,073,715,799.21/2,100,811.56
6. Step 6: Final answer
   x = 1,020,593.07