Finding the Fourth Proportional to 1,353.27, 1,867.49 and 763.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.27 : 1,867.49 = 763.81 : x
2. Step 2: Convert to fraction form
   1,353.27/1,867.49 = 763.81/x
3. Step 3: Cross multiply
   1,353.27x = 1,867.49 × 763.81
4. Step 4: Simplify right side
   1,353.27x = 1,426,416.71
5. Step 5: Solve for x
   x = 1,426,416.71/1,353.27
6. Step 6: Final answer
   x = 1,054.05