Finding the Fourth Proportional to 1,353.34, 1,867.58 and 763.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.34 : 1,867.58 = 763.86 : x
2. Step 2: Convert to fraction form
   1,353.34/1,867.58 = 763.86/x
3. Step 3: Cross multiply
   1,353.34x = 1,867.58 × 763.86
4. Step 4: Simplify right side
   1,353.34x = 1,426,571.57
5. Step 5: Solve for x
   x = 1,426,571.57/1,353.34
6. Step 6: Final answer
   x = 1,054.11