Finding the Fourth Proportional to 2,740.49, 3,781.61 and 1,561.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,740.49 : 3,781.61 = 1,561.49 : x
2. Step 2: Convert to fraction form
   2,740.49/3,781.61 = 1,561.49/x
3. Step 3: Cross multiply
   2,740.49x = 3,781.61 × 1,561.49
4. Step 4: Simplify right side
   2,740.49x = 5,904,938.39
5. Step 5: Solve for x
   x = 5,904,938.39/2,740.49
6. Step 6: Final answer
   x = 2,154.70