Finding the Fourth Proportional to 1,340,510.72, 2,010,134.31 and 486,980.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340,510.72 : 2,010,134.31 = 486,980.51 : x
2. Step 2: Convert to fraction form
   1,340,510.72/2,010,134.31 = 486,980.51/x
3. Step 3: Cross multiply
   1,340,510.72x = 2,010,134.31 × 486,980.51
4. Step 4: Simplify right side
   1,340,510.72x = 978,896,231,452.30
5. Step 5: Solve for x
   x = 978,896,231,452.30/1,340,510.72
6. Step 6: Final answer
   x = 730,241.26