Finding the Fourth Proportional to 1,682.72, 2,523.20 and 757.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,682.72 : 2,523.20 = 757.49 : x
2. Step 2: Convert to fraction form
   1,682.72/2,523.20 = 757.49/x
3. Step 3: Cross multiply
   1,682.72x = 2,523.20 × 757.49
4. Step 4: Simplify right side
   1,682.72x = 1,911,298.77
5. Step 5: Solve for x
   x = 1,911,298.77/1,682.72
6. Step 6: Final answer
   x = 1,135.84