Finding the Fourth Proportional to 1,359.35, 1,875.87 and 769.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.35 : 1,875.87 = 769.91 : x
2. Step 2: Convert to fraction form
   1,359.35/1,875.87 = 769.91/x
3. Step 3: Cross multiply
   1,359.35x = 1,875.87 × 769.91
4. Step 4: Simplify right side
   1,359.35x = 1,444,241.69
5. Step 5: Solve for x
   x = 1,444,241.69/1,359.35
6. Step 6: Final answer
   x = 1,062.45