Finding the Fourth Proportional to 1,359.30, 1,875.80 and 769.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.30 : 1,875.80 = 769.82 : x
2. Step 2: Convert to fraction form
   1,359.30/1,875.80 = 769.82/x
3. Step 3: Cross multiply
   1,359.30x = 1,875.80 × 769.82
4. Step 4: Simplify right side
   1,359.30x = 1,444,015.13
5. Step 5: Solve for x
   x = 1,444,015.13/1,359.30
6. Step 6: Final answer
   x = 1,062.32