Finding the Fourth Proportional to 2,514.80, 3,773.34 and 1,054.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,514.80 : 3,773.34 = 1,054.28 : x
2. Step 2: Convert to fraction form
   2,514.80/3,773.34 = 1,054.28/x
3. Step 3: Cross multiply
   2,514.80x = 3,773.34 × 1,054.28
4. Step 4: Simplify right side
   2,514.80x = 3,978,156.90
5. Step 5: Solve for x
   x = 3,978,156.90/2,514.80
6. Step 6: Final answer
   x = 1,581.90