Finding the Fourth Proportional to 1,359.09, 1,875.60 and 769.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.09 : 1,875.60 = 769.59 : x
2. Step 2: Convert to fraction form
   1,359.09/1,875.60 = 769.59/x
3. Step 3: Cross multiply
   1,359.09x = 1,875.60 × 769.59
4. Step 4: Simplify right side
   1,359.09x = 1,443,443.00
5. Step 5: Solve for x
   x = 1,443,443.00/1,359.09
6. Step 6: Final answer
   x = 1,062.07