Finding the Fourth Proportional to 1,521,478.22, 2,099,705.55 and 842,414.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521,478.22 : 2,099,705.55 = 842,414.78 : x
2. Step 2: Convert to fraction form
   1,521,478.22/2,099,705.55 = 842,414.78/x
3. Step 3: Cross multiply
   1,521,478.22x = 2,099,705.55 × 842,414.78
4. Step 4: Simplify right side
   1,521,478.22x = 1,768,822,988,968.03
5. Step 5: Solve for x
   x = 1,768,822,988,968.03/1,521,478.22
6. Step 6: Final answer
   x = 1,162,568.72