Finding the Fourth Proportional to 1,185,960.56, 1,636,605.72 and 642,091.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185,960.56 : 1,636,605.72 = 642,091.93 : x
2. Step 2: Convert to fraction form
   1,185,960.56/1,636,605.72 = 642,091.93/x
3. Step 3: Cross multiply
   1,185,960.56x = 1,636,605.72 × 642,091.93
4. Step 4: Simplify right side
   1,185,960.56x = 1,050,851,325,403.84
5. Step 5: Solve for x
   x = 1,050,851,325,403.84/1,185,960.56
6. Step 6: Final answer
   x = 886,076.11