Finding the Fourth Proportional to 2,545.45, 3,818.18 and 902.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.45 : 3,818.18 = 902.05 : x
2. Step 2: Convert to fraction form
   2,545.45/3,818.18 = 902.05/x
3. Step 3: Cross multiply
   2,545.45x = 3,818.18 × 902.05
4. Step 4: Simplify right side
   2,545.45x = 3,444,181.98
5. Step 5: Solve for x
   x = 3,444,181.98/2,545.45
6. Step 6: Final answer
   x = 1,353.08