Finding the Fourth Proportional to 1,353.17, 1,867.38 and 763.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.17 : 1,867.38 = 763.83 : x
2. Step 2: Convert to fraction form
   1,353.17/1,867.38 = 763.83/x
3. Step 3: Cross multiply
   1,353.17x = 1,867.38 × 763.83
4. Step 4: Simplify right side
   1,353.17x = 1,426,357.05
5. Step 5: Solve for x
   x = 1,426,357.05/1,353.17
6. Step 6: Final answer
   x = 1,054.09