Finding the Fourth Proportional to 2,505.06, 3,456.71 and 1,385.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505.06 : 3,456.71 = 1,385.82 : x
2. Step 2: Convert to fraction form
   2,505.06/3,456.71 = 1,385.82/x
3. Step 3: Cross multiply
   2,505.06x = 3,456.71 × 1,385.82
4. Step 4: Simplify right side
   2,505.06x = 4,790,377.85
5. Step 5: Solve for x
   x = 4,790,377.85/2,505.06
6. Step 6: Final answer
   x = 1,912.28