Finding the Fourth Proportional to 1,279,100.43, 1,765,112.22 and 706,128.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,279,100.43 : 1,765,112.22 = 706,128.30 : x
2. Step 2: Convert to fraction form
   1,279,100.43/1,765,112.22 = 706,128.30/x
3. Step 3: Cross multiply
   1,279,100.43x = 1,765,112.22 × 706,128.30
4. Step 4: Simplify right side
   1,279,100.43x = 1,246,395,691,217.83
5. Step 5: Solve for x
   x = 1,246,395,691,217.83/1,279,100.43
6. Step 6: Final answer
   x = 974,431.45