Finding the Fourth Proportional to 1,352.90, 1,866.83 and 763.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,352.90 : 1,866.83 = 763.33 : x
2. Step 2: Convert to fraction form
   1,352.90/1,866.83 = 763.33/x
3. Step 3: Cross multiply
   1,352.90x = 1,866.83 × 763.33
4. Step 4: Simplify right side
   1,352.90x = 1,424,998.86
5. Step 5: Solve for x
   x = 1,424,998.86/1,352.90
6. Step 6: Final answer
   x = 1,053.30