Finding the Fourth Proportional to 1,284.30, 1,772.33 and 753.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,284.30 : 1,772.33 = 753.50 : x
2. Step 2: Convert to fraction form
   1,284.30/1,772.33 = 753.50/x
3. Step 3: Cross multiply
   1,284.30x = 1,772.33 × 753.50
4. Step 4: Simplify right side
   1,284.30x = 1,335,451.32
5. Step 5: Solve for x
   x = 1,335,451.32/1,284.30
6. Step 6: Final answer
   x = 1,039.83