Finding the Fourth Proportional to 1,353.03, 1,867.22 and 763.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.03 : 1,867.22 = 763.55 : x
2. Step 2: Convert to fraction form
   1,353.03/1,867.22 = 763.55/x
3. Step 3: Cross multiply
   1,353.03x = 1,867.22 × 763.55
4. Step 4: Simplify right side
   1,353.03x = 1,425,715.83
5. Step 5: Solve for x
   x = 1,425,715.83/1,353.03
6. Step 6: Final answer
   x = 1,053.72