Finding the Fourth Proportional to 1,978,196.67, 2,966,879.82 and 557,920.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978,196.67 : 2,966,879.82 = 557,920.61 : x
2. Step 2: Convert to fraction form
   1,978,196.67/2,966,879.82 = 557,920.61/x
3. Step 3: Cross multiply
   1,978,196.67x = 2,966,879.82 × 557,920.61
4. Step 4: Simplify right side
   1,978,196.67x = 1,655,283,384,136.69
5. Step 5: Solve for x
   x = 1,655,283,384,136.69/1,978,196.67
6. Step 6: Final answer
   x = 836,763.81