Finding the Fourth Proportional to 1,392,401.42, 2,086,985.78 and 527,286.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392,401.42 : 2,086,985.78 = 527,286.42 : x
2. Step 2: Convert to fraction form
   1,392,401.42/2,086,985.78 = 527,286.42/x
3. Step 3: Cross multiply
   1,392,401.42x = 2,086,985.78 × 527,286.42
4. Step 4: Simplify right side
   1,392,401.42x = 1,100,439,261,845.32
5. Step 5: Solve for x
   x = 1,100,439,261,845.32/1,392,401.42
6. Step 6: Final answer
   x = 790,317.54