Finding the Fourth Proportional to 1,067,128.31, 1,600,775.82 and 308,981.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,067,128.31 : 1,600,775.82 = 308,981.07 : x
2. Step 2: Convert to fraction form
   1,067,128.31/1,600,775.82 = 308,981.07/x
3. Step 3: Cross multiply
   1,067,128.31x = 1,600,775.82 × 308,981.07
4. Step 4: Simplify right side
   1,067,128.31x = 494,609,425,693.73
5. Step 5: Solve for x
   x = 494,609,425,693.73/1,067,128.31
6. Step 6: Final answer
   x = 463,495.74