Finding the Fourth Proportional to 1,353.57, 1,866.86 and 933.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.57 : 1,866.86 = 933.83 : x
2. Step 2: Convert to fraction form
   1,353.57/1,866.86 = 933.83/x
3. Step 3: Cross multiply
   1,353.57x = 1,866.86 × 933.83
4. Step 4: Simplify right side
   1,353.57x = 1,743,315.87
5. Step 5: Solve for x
   x = 1,743,315.87/1,353.57
6. Step 6: Final answer
   x = 1,287.94