Finding the Fourth Proportional to 1,284,943.56, 1,773,195.67 and 711,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,284,943.56 : 1,773,195.67 = 711,978.72 : x
2. Step 2: Convert to fraction form
   1,284,943.56/1,773,195.67 = 711,978.72/x
3. Step 3: Cross multiply
   1,284,943.56x = 1,773,195.67 × 711,978.72
4. Step 4: Simplify right side
   1,284,943.56x = 1,262,477,583,436.14
5. Step 5: Solve for x
   x = 1,262,477,583,436.14/1,284,943.56
6. Step 6: Final answer
   x = 982,515.98