Finding the Fourth Proportional to 2,052.72, 3,078.76 and 753.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,052.72 : 3,078.76 = 753.88 : x
2. Step 2: Convert to fraction form
   2,052.72/3,078.76 = 753.88/x
3. Step 3: Cross multiply
   2,052.72x = 3,078.76 × 753.88
4. Step 4: Simplify right side
   2,052.72x = 2,321,015.59
5. Step 5: Solve for x
   x = 2,321,015.59/2,052.72
6. Step 6: Final answer
   x = 1,130.70