Finding the Fourth Proportional to 2,545.58, 3,818.96 and 790.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.58 : 3,818.96 = 790.49 : x
2. Step 2: Convert to fraction form
   2,545.58/3,818.96 = 790.49/x
3. Step 3: Cross multiply
   2,545.58x = 3,818.96 × 790.49
4. Step 4: Simplify right side
   2,545.58x = 3,018,849.69
5. Step 5: Solve for x
   x = 3,018,849.69/2,545.58
6. Step 6: Final answer
   x = 1,185.92