Finding the Fourth Proportional to 860,323.32, 1,185,494.65 and 665,547.69

Step by Step Solution

1. Step 1: Write the proportion equation
   860,323.32 : 1,185,494.65 = 665,547.69 : x
2. Step 2: Convert to fraction form
   860,323.32/1,185,494.65 = 665,547.69/x
3. Step 3: Cross multiply
   860,323.32x = 1,185,494.65 × 665,547.69
4. Step 4: Simplify right side
   860,323.32x = 789,003,225,814.86
5. Step 5: Solve for x
   x = 789,003,225,814.86/860,323.32
6. Step 6: Final answer
   x = 917,100.82