Finding the Fourth Proportional to 2,740.09, 3,781.34 and 1,561.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,740.09 : 3,781.34 = 1,561.17 : x
2. Step 2: Convert to fraction form
   2,740.09/3,781.34 = 1,561.17/x
3. Step 3: Cross multiply
   2,740.09x = 3,781.34 × 1,561.17
4. Step 4: Simplify right side
   2,740.09x = 5,903,314.57
5. Step 5: Solve for x
   x = 5,903,314.57/2,740.09
6. Step 6: Final answer
   x = 2,154.42