Finding the Fourth Proportional to 1,353.25, 1,867.45 and 763.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.25 : 1,867.45 = 763.79 : x
2. Step 2: Convert to fraction form
   1,353.25/1,867.45 = 763.79/x
3. Step 3: Cross multiply
   1,353.25x = 1,867.45 × 763.79
4. Step 4: Simplify right side
   1,353.25x = 1,426,335.82
5. Step 5: Solve for x
   x = 1,426,335.82/1,353.25
6. Step 6: Final answer
   x = 1,054.01