Finding the Fourth Proportional to 2,742.88, 3,784.94 and 1,623.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,742.88 : 3,784.94 = 1,623.72 : x
2. Step 2: Convert to fraction form
   2,742.88/3,784.94 = 1,623.72/x
3. Step 3: Cross multiply
   2,742.88x = 3,784.94 × 1,623.72
4. Step 4: Simplify right side
   2,742.88x = 6,145,682.78
5. Step 5: Solve for x
   x = 6,145,682.78/2,742.88
6. Step 6: Final answer
   x = 2,240.59