Finding the Fourth Proportional to 1,353.09, 1,867.32 and 763.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.09 : 1,867.32 = 763.59 : x
2. Step 2: Convert to fraction form
   1,353.09/1,867.32 = 763.59/x
3. Step 3: Cross multiply
   1,353.09x = 1,867.32 × 763.59
4. Step 4: Simplify right side
   1,353.09x = 1,425,866.88
5. Step 5: Solve for x
   x = 1,425,866.88/1,353.09
6. Step 6: Final answer
   x = 1,053.79