Finding the Fourth Proportional to 2,269.09, 3,131.27 and 1,386.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.09 : 3,131.27 = 1,386.37 : x
2. Step 2: Convert to fraction form
   2,269.09/3,131.27 = 1,386.37/x
3. Step 3: Cross multiply
   2,269.09x = 3,131.27 × 1,386.37
4. Step 4: Simplify right side
   2,269.09x = 4,341,091.86
5. Step 5: Solve for x
   x = 4,341,091.86/2,269.09
6. Step 6: Final answer
   x = 1,913.14