Finding the Fourth Proportional to 2,742.42, 4,114.55 and 1,821.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,742.42 : 4,114.55 = 1,821.61 : x
2. Step 2: Convert to fraction form
   2,742.42/4,114.55 = 1,821.61/x
3. Step 3: Cross multiply
   2,742.42x = 4,114.55 × 1,821.61
4. Step 4: Simplify right side
   2,742.42x = 7,495,081.73
5. Step 5: Solve for x
   x = 7,495,081.73/2,742.42
6. Step 6: Final answer
   x = 2,733.01