Finding the Fourth Proportional to 2,514.08, 3,770.76 and 1,215.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,514.08 : 3,770.76 = 1,215.20 : x
2. Step 2: Convert to fraction form
   2,514.08/3,770.76 = 1,215.20/x
3. Step 3: Cross multiply
   2,514.08x = 3,770.76 × 1,215.20
4. Step 4: Simplify right side
   2,514.08x = 4,582,227.55
5. Step 5: Solve for x
   x = 4,582,227.55/2,514.08
6. Step 6: Final answer
   x = 1,822.63