Finding the Fourth Proportional to 1,353.93, 1,868.38 and 764.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.93 : 1,868.38 = 764.47 : x
2. Step 2: Convert to fraction form
   1,353.93/1,868.38 = 764.47/x
3. Step 3: Cross multiply
   1,353.93x = 1,868.38 × 764.47
4. Step 4: Simplify right side
   1,353.93x = 1,428,320.46
5. Step 5: Solve for x
   x = 1,428,320.46/1,353.93
6. Step 6: Final answer
   x = 1,054.94