Finding the Fourth Proportional to 2,269.69, 3,132.20 and 1,385.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.69 : 3,132.20 = 1,385.37 : x
2. Step 2: Convert to fraction form
   2,269.69/3,132.20 = 1,385.37/x
3. Step 3: Cross multiply
   2,269.69x = 3,132.20 × 1,385.37
4. Step 4: Simplify right side
   2,269.69x = 4,339,259.38
5. Step 5: Solve for x
   x = 4,339,259.38/2,269.69
6. Step 6: Final answer
   x = 1,911.83