Finding the Fourth Proportional to 1,353.93, 1,868.25 and 764.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.93 : 1,868.25 = 764.43 : x
2. Step 2: Convert to fraction form
   1,353.93/1,868.25 = 764.43/x
3. Step 3: Cross multiply
   1,353.93x = 1,868.25 × 764.43
4. Step 4: Simplify right side
   1,353.93x = 1,428,146.35
5. Step 5: Solve for x
   x = 1,428,146.35/1,353.93
6. Step 6: Final answer
   x = 1,054.82