Finding the Fourth Proportional to 1,353.74, 1,868.31 and 756.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.74 : 1,868.31 = 756.45 : x
2. Step 2: Convert to fraction form
   1,353.74/1,868.31 = 756.45/x
3. Step 3: Cross multiply
   1,353.74x = 1,868.31 × 756.45
4. Step 4: Simplify right side
   1,353.74x = 1,413,283.10
5. Step 5: Solve for x
   x = 1,413,283.10/1,353.74
6. Step 6: Final answer
   x = 1,043.99