Finding the Fourth Proportional to 1,842.38, 2,757.42 and 1,817.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,842.38 : 2,757.42 = 1,817.78 : x
2. Step 2: Convert to fraction form
   1,842.38/2,757.42 = 1,817.78/x
3. Step 3: Cross multiply
   1,842.38x = 2,757.42 × 1,817.78
4. Step 4: Simplify right side
   1,842.38x = 5,012,382.93
5. Step 5: Solve for x
   x = 5,012,382.93/1,842.38
6. Step 6: Final answer
   x = 2,720.60