Finding the Fourth Proportional to 1,275.58, 1,760.43 and 751.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,275.58 : 1,760.43 = 751.78 : x
2. Step 2: Convert to fraction form
   1,275.58/1,760.43 = 751.78/x
3. Step 3: Cross multiply
   1,275.58x = 1,760.43 × 751.78
4. Step 4: Simplify right side
   1,275.58x = 1,323,456.07
5. Step 5: Solve for x
   x = 1,323,456.07/1,275.58
6. Step 6: Final answer
   x = 1,037.53