Finding the Fourth Proportional to 1,276.63, 1,761.69 and 752.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,276.63 : 1,761.69 = 752.56 : x
2. Step 2: Convert to fraction form
   1,276.63/1,761.69 = 752.56/x
3. Step 3: Cross multiply
   1,276.63x = 1,761.69 × 752.56
4. Step 4: Simplify right side
   1,276.63x = 1,325,777.43
5. Step 5: Solve for x
   x = 1,325,777.43/1,276.63
6. Step 6: Final answer
   x = 1,038.50