Finding the Fourth Proportional to 1,353.92, 1,868.46 and 764.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.92 : 1,868.46 = 764.42 : x
2. Step 2: Convert to fraction form
   1,353.92/1,868.46 = 764.42/x
3. Step 3: Cross multiply
   1,353.92x = 1,868.46 × 764.42
4. Step 4: Simplify right side
   1,353.92x = 1,428,288.19
5. Step 5: Solve for x
   x = 1,428,288.19/1,353.92
6. Step 6: Final answer
   x = 1,054.93