Finding the Fourth Proportional to 1,514.81, 2,090.55 and 851.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,514.81 : 2,090.55 = 851.72 : x
2. Step 2: Convert to fraction form
   1,514.81/2,090.55 = 851.72/x
3. Step 3: Cross multiply
   1,514.81x = 2,090.55 × 851.72
4. Step 4: Simplify right side
   1,514.81x = 1,780,563.25
5. Step 5: Solve for x
   x = 1,780,563.25/1,514.81
6. Step 6: Final answer
   x = 1,175.44