Finding the Fourth Proportional to 1,284,992, 1,773,327.84 and 711,978.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,284,992 : 1,773,327.84 = 711,978.56 : x
2. Step 2: Convert to fraction form
   1,284,992/1,773,327.84 = 711,978.56/x
3. Step 3: Cross multiply
   1,284,992x = 1,773,327.84 × 711,978.56
4. Step 4: Simplify right side
   1,284,992x = 1,262,571,401,931.11
5. Step 5: Solve for x
   x = 1,262,571,401,931.11/1,284,992
6. Step 6: Final answer
   x = 982,551.96