Finding the Fourth Proportional to 860,322.32, 1,185,493.27 and 665,546.69

Step by Step Solution

1. Step 1: Write the proportion equation
   860,322.32 : 1,185,493.27 = 665,546.69 : x
2. Step 2: Convert to fraction form
   860,322.32/1,185,493.27 = 665,546.69/x
3. Step 3: Cross multiply
   860,322.32x = 1,185,493.27 × 665,546.69
4. Step 4: Simplify right side
   860,322.32x = 789,001,121,865.78
5. Step 5: Solve for x
   x = 789,001,121,865.78/860,322.32
6. Step 6: Final answer
   x = 917,099.44