Finding the Fourth Proportional to 1,287.37, 1,774.71 and 844.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287.37 : 1,774.71 = 844.50 : x
2. Step 2: Convert to fraction form
   1,287.37/1,774.71 = 844.50/x
3. Step 3: Cross multiply
   1,287.37x = 1,774.71 × 844.50
4. Step 4: Simplify right side
   1,287.37x = 1,498,742.60
5. Step 5: Solve for x
   x = 1,498,742.60/1,287.37
6. Step 6: Final answer
   x = 1,164.19