Finding the Fourth Proportional to 1,441.02, 1,988.49 and 851.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.02 : 1,988.49 = 851.43 : x
2. Step 2: Convert to fraction form
   1,441.02/1,988.49 = 851.43/x
3. Step 3: Cross multiply
   1,441.02x = 1,988.49 × 851.43
4. Step 4: Simplify right side
   1,441.02x = 1,693,060.04
5. Step 5: Solve for x
   x = 1,693,060.04/1,441.02
6. Step 6: Final answer
   x = 1,174.90