Finding the Fourth Proportional to 1,352.89, 1,867.15 and 763.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,352.89 : 1,867.15 = 763.55 : x
2. Step 2: Convert to fraction form
   1,352.89/1,867.15 = 763.55/x
3. Step 3: Cross multiply
   1,352.89x = 1,867.15 × 763.55
4. Step 4: Simplify right side
   1,352.89x = 1,425,662.38
5. Step 5: Solve for x
   x = 1,425,662.38/1,352.89
6. Step 6: Final answer
   x = 1,053.79