Finding the Fourth Proportional to 1,100.94, 1,650.06 and 857.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.94 : 1,650.06 = 857.10 : x
2. Step 2: Convert to fraction form
   1,100.94/1,650.06 = 857.10/x
3. Step 3: Cross multiply
   1,100.94x = 1,650.06 × 857.10
4. Step 4: Simplify right side
   1,100.94x = 1,414,266.43
5. Step 5: Solve for x
   x = 1,414,266.43/1,100.94
6. Step 6: Final answer
   x = 1,284.60