Finding the Fourth Proportional to 1,353.38, 1,867.64 and 763.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.38 : 1,867.64 = 763.98 : x
2. Step 2: Convert to fraction form
   1,353.38/1,867.64 = 763.98/x
3. Step 3: Cross multiply
   1,353.38x = 1,867.64 × 763.98
4. Step 4: Simplify right side
   1,353.38x = 1,426,839.61
5. Step 5: Solve for x
   x = 1,426,839.61/1,353.38
6. Step 6: Final answer
   x = 1,054.28