Finding the Fourth Proportional to 2,545.33, 3,818.59 and 790.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.33 : 3,818.59 = 790.25 : x
2. Step 2: Convert to fraction form
   2,545.33/3,818.59 = 790.25/x
3. Step 3: Cross multiply
   2,545.33x = 3,818.59 × 790.25
4. Step 4: Simplify right side
   2,545.33x = 3,017,619.68
5. Step 5: Solve for x
   x = 3,017,619.68/2,545.33
6. Step 6: Final answer
   x = 1,185.55