Finding the Fourth Proportional to 1,514.71, 2,090.23 and 842.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,514.71 : 2,090.23 = 842.55 : x
2. Step 2: Convert to fraction form
   1,514.71/2,090.23 = 842.55/x
3. Step 3: Cross multiply
   1,514.71x = 2,090.23 × 842.55
4. Step 4: Simplify right side
   1,514.71x = 1,761,127.47
5. Step 5: Solve for x
   x = 1,761,127.47/1,514.71
6. Step 6: Final answer
   x = 1,162.68