Finding the Fourth Proportional to 1,362.69, 1,881.06 and 865.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.69 : 1,881.06 = 865.61 : x
2. Step 2: Convert to fraction form
   1,362.69/1,881.06 = 865.61/x
3. Step 3: Cross multiply
   1,362.69x = 1,881.06 × 865.61
4. Step 4: Simplify right side
   1,362.69x = 1,628,250.61
5. Step 5: Solve for x
   x = 1,628,250.61/1,362.69
6. Step 6: Final answer
   x = 1,194.88