Finding the Fourth Proportional to 1,128.82, 1,555.17 and 962.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128.82 : 1,555.17 = 962.50 : x
2. Step 2: Convert to fraction form
   1,128.82/1,555.17 = 962.50/x
3. Step 3: Cross multiply
   1,128.82x = 1,555.17 × 962.50
4. Step 4: Simplify right side
   1,128.82x = 1,496,851.13
5. Step 5: Solve for x
   x = 1,496,851.13/1,128.82
6. Step 6: Final answer
   x = 1,326.03