Finding the Fourth Proportional to 1,356.30, 1,870.77 and 962.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.30 : 1,870.77 = 962.64 : x
2. Step 2: Convert to fraction form
   1,356.30/1,870.77 = 962.64/x
3. Step 3: Cross multiply
   1,356.30x = 1,870.77 × 962.64
4. Step 4: Simplify right side
   1,356.30x = 1,800,878.03
5. Step 5: Solve for x
   x = 1,800,878.03/1,356.30
6. Step 6: Final answer
   x = 1,327.79