Finding the Fourth Proportional to 2,505.06, 3,456.86 and 1,385.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505.06 : 3,456.86 = 1,385.93 : x
2. Step 2: Convert to fraction form
   2,505.06/3,456.86 = 1,385.93/x
3. Step 3: Cross multiply
   2,505.06x = 3,456.86 × 1,385.93
4. Step 4: Simplify right side
   2,505.06x = 4,790,967.69
5. Step 5: Solve for x
   x = 4,790,967.69/2,505.06
6. Step 6: Final answer
   x = 1,912.52