Finding the Fourth Proportional to 2,089.95, 3,133.53 and 857.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,089.95 : 3,133.53 = 857.04 : x
2. Step 2: Convert to fraction form
   2,089.95/3,133.53 = 857.04/x
3. Step 3: Cross multiply
   2,089.95x = 3,133.53 × 857.04
4. Step 4: Simplify right side
   2,089.95x = 2,685,560.55
5. Step 5: Solve for x
   x = 2,685,560.55/2,089.95
6. Step 6: Final answer
   x = 1,284.99