Finding the Fourth Proportional to 2,269.00, 3,131.56 and 1,385.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.00 : 3,131.56 = 1,385.31 : x
2. Step 2: Convert to fraction form
   2,269.00/3,131.56 = 1,385.31/x
3. Step 3: Cross multiply
   2,269.00x = 3,131.56 × 1,385.31
4. Step 4: Simplify right side
   2,269.00x = 4,338,177.92
5. Step 5: Solve for x
   x = 4,338,177.92/2,269.00
6. Step 6: Final answer
   x = 1,911.94