Finding the Fourth Proportional to 1,245.91, 1,719.54 and 748.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,245.91 : 1,719.54 = 748.82 : x
2. Step 2: Convert to fraction form
   1,245.91/1,719.54 = 748.82/x
3. Step 3: Cross multiply
   1,245.91x = 1,719.54 × 748.82
4. Step 4: Simplify right side
   1,245.91x = 1,287,625.94
5. Step 5: Solve for x
   x = 1,287,625.94/1,245.91
6. Step 6: Final answer
   x = 1,033.49