Finding the Fourth Proportional to 2,742.72, 3,784.85 and 1,563.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,742.72 : 3,784.85 = 1,563.57 : x
2. Step 2: Convert to fraction form
   2,742.72/3,784.85 = 1,563.57/x
3. Step 3: Cross multiply
   2,742.72x = 3,784.85 × 1,563.57
4. Step 4: Simplify right side
   2,742.72x = 5,917,858.99
5. Step 5: Solve for x
   x = 5,917,858.99/2,742.72
6. Step 6: Final answer
   x = 2,157.66