Finding the Fourth Proportional to 1,657,371.97, 2,287,196.91 and 978,308.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,657,371.97 : 2,287,196.91 = 978,308.47 : x
2. Step 2: Convert to fraction form
   1,657,371.97/2,287,196.91 = 978,308.47/x
3. Step 3: Cross multiply
   1,657,371.97x = 2,287,196.91 × 978,308.47
4. Step 4: Simplify right side
   1,657,371.97x = 2,237,584,109,610.83
5. Step 5: Solve for x
   x = 2,237,584,109,610.83/1,657,371.97
6. Step 6: Final answer
   x = 1,350,079.61