Finding the Fourth Proportional to 2,269.29, 3,131.91 and 1,384.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.29 : 3,131.91 = 1,384.91 : x
2. Step 2: Convert to fraction form
   2,269.29/3,131.91 = 1,384.91/x
3. Step 3: Cross multiply
   2,269.29x = 3,131.91 × 1,384.91
4. Step 4: Simplify right side
   2,269.29x = 4,337,397.82
5. Step 5: Solve for x
   x = 4,337,397.82/2,269.29
6. Step 6: Final answer
   x = 1,911.35