Finding the Fourth Proportional to 2,700.42, 4,047.19 and 1,218.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,700.42 : 4,047.19 = 1,218.05 : x
2. Step 2: Convert to fraction form
   2,700.42/4,047.19 = 1,218.05/x
3. Step 3: Cross multiply
   2,700.42x = 4,047.19 × 1,218.05
4. Step 4: Simplify right side
   2,700.42x = 4,929,686.85
5. Step 5: Solve for x
   x = 4,929,686.85/2,700.42
6. Step 6: Final answer
   x = 1,825.53