Finding the Fourth Proportional to 1,898.62, 2,846.68 and 857.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,898.62 : 2,846.68 = 857.52 : x
2. Step 2: Convert to fraction form
   1,898.62/2,846.68 = 857.52/x
3. Step 3: Cross multiply
   1,898.62x = 2,846.68 × 857.52
4. Step 4: Simplify right side
   1,898.62x = 2,441,085.03
5. Step 5: Solve for x
   x = 2,441,085.03/1,898.62
6. Step 6: Final answer
   x = 1,285.72