Finding the Fourth Proportional to 1,298.79, 1,793.22 and 962.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298.79 : 1,793.22 = 962.78 : x
2. Step 2: Convert to fraction form
   1,298.79/1,793.22 = 962.78/x
3. Step 3: Cross multiply
   1,298.79x = 1,793.22 × 962.78
4. Step 4: Simplify right side
   1,298.79x = 1,726,467.39
5. Step 5: Solve for x
   x = 1,726,467.39/1,298.79
6. Step 6: Final answer
   x = 1,329.29