Finding the Fourth Proportional to 2,740.16, 3,780.71 and 1,561.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,740.16 : 3,780.71 = 1,561.01 : x
2. Step 2: Convert to fraction form
   2,740.16/3,780.71 = 1,561.01/x
3. Step 3: Cross multiply
   2,740.16x = 3,780.71 × 1,561.01
4. Step 4: Simplify right side
   2,740.16x = 5,901,705.26
5. Step 5: Solve for x
   x = 5,901,705.26/2,740.16
6. Step 6: Final answer
   x = 2,153.78