Finding the Fourth Proportional to 1,424.64, 2,132.83 and 875.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,424.64 : 2,132.83 = 875.15 : x
2. Step 2: Convert to fraction form
   1,424.64/2,132.83 = 875.15/x
3. Step 3: Cross multiply
   1,424.64x = 2,132.83 × 875.15
4. Step 4: Simplify right side
   1,424.64x = 1,866,556.60
5. Step 5: Solve for x
   x = 1,866,556.60/1,424.64
6. Step 6: Final answer
   x = 1,310.20