Finding the Fourth Proportional to 1,350.76, 1,864.22 and 819.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.76 : 1,864.22 = 819.86 : x
2. Step 2: Convert to fraction form
   1,350.76/1,864.22 = 819.86/x
3. Step 3: Cross multiply
   1,350.76x = 1,864.22 × 819.86
4. Step 4: Simplify right side
   1,350.76x = 1,528,399.41
5. Step 5: Solve for x
   x = 1,528,399.41/1,350.76
6. Step 6: Final answer
   x = 1,131.51