Finding the Fourth Proportional to 1,418.06, 1,955.58 and 850.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418.06 : 1,955.58 = 850.81 : x
2. Step 2: Convert to fraction form
   1,418.06/1,955.58 = 850.81/x
3. Step 3: Cross multiply
   1,418.06x = 1,955.58 × 850.81
4. Step 4: Simplify right side
   1,418.06x = 1,663,827.57
5. Step 5: Solve for x
   x = 1,663,827.57/1,418.06
6. Step 6: Final answer
   x = 1,173.31