Finding the Fourth Proportional to 1,388,682.18, 2,079,659.37 and 961,019.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,682.18 : 2,079,659.37 = 961,019.58 : x
2. Step 2: Convert to fraction form
   1,388,682.18/2,079,659.37 = 961,019.58/x
3. Step 3: Cross multiply
   1,388,682.18x = 2,079,659.37 × 961,019.58
4. Step 4: Simplify right side
   1,388,682.18x = 1,998,593,374,300.46
5. Step 5: Solve for x
   x = 1,998,593,374,300.46/1,388,682.18
6. Step 6: Final answer
   x = 1,439,201.43