Finding the Fourth Proportional to 2,543.82, 3,815.27 and 900.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,543.82 : 3,815.27 = 900.38 : x
2. Step 2: Convert to fraction form
   2,543.82/3,815.27 = 900.38/x
3. Step 3: Cross multiply
   2,543.82x = 3,815.27 × 900.38
4. Step 4: Simplify right side
   2,543.82x = 3,435,192.80
5. Step 5: Solve for x
   x = 3,435,192.80/2,543.82
6. Step 6: Final answer
   x = 1,350.41