Finding the Fourth Proportional to 2,545.31, 3,818.75 and 2,104.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.31 : 3,818.75 = 2,104.55 : x
2. Step 2: Convert to fraction form
   2,545.31/3,818.75 = 2,104.55/x
3. Step 3: Cross multiply
   2,545.31x = 3,818.75 × 2,104.55
4. Step 4: Simplify right side
   2,545.31x = 8,036,743.07
5. Step 5: Solve for x
   x = 8,036,743.07/2,545.31
6. Step 6: Final answer
   x = 3,157.47