Finding the Fourth Proportional to 1,245.71, 1,718.69 and 748.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,245.71 : 1,718.69 = 748.46 : x
2. Step 2: Convert to fraction form
   1,245.71/1,718.69 = 748.46/x
3. Step 3: Cross multiply
   1,245.71x = 1,718.69 × 748.46
4. Step 4: Simplify right side
   1,245.71x = 1,286,358.38
5. Step 5: Solve for x
   x = 1,286,358.38/1,245.71
6. Step 6: Final answer
   x = 1,032.63