Finding the Fourth Proportional to 2,051.28, 3,076.61 and 752.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,051.28 : 3,076.61 = 752.45 : x
2. Step 2: Convert to fraction form
   2,051.28/3,076.61 = 752.45/x
3. Step 3: Cross multiply
   2,051.28x = 3,076.61 × 752.45
4. Step 4: Simplify right side
   2,051.28x = 2,314,976.05
5. Step 5: Solve for x
   x = 2,314,976.05/2,051.28
6. Step 6: Final answer
   x = 1,128.55