Finding the Fourth Proportional to 2,742.69, 4,114.05 and 1,098.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,742.69 : 4,114.05 = 1,098.78 : x
2. Step 2: Convert to fraction form
   2,742.69/4,114.05 = 1,098.78/x
3. Step 3: Cross multiply
   2,742.69x = 4,114.05 × 1,098.78
4. Step 4: Simplify right side
   2,742.69x = 4,520,435.86
5. Step 5: Solve for x
   x = 4,520,435.86/2,742.69
6. Step 6: Final answer
   x = 1,648.18