Finding the Fourth Proportional to 2,545.47, 3,818.43 and 790.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.47 : 3,818.43 = 790.48 : x
2. Step 2: Convert to fraction form
   2,545.47/3,818.43 = 790.48/x
3. Step 3: Cross multiply
   2,545.47x = 3,818.43 × 790.48
4. Step 4: Simplify right side
   2,545.47x = 3,018,392.55
5. Step 5: Solve for x
   x = 3,018,392.55/2,545.47
6. Step 6: Final answer
   x = 1,185.79