Finding the Fourth Proportional to 2,543.32, 3,815.23 and 788.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,543.32 : 3,815.23 = 788.25 : x
2. Step 2: Convert to fraction form
   2,543.32/3,815.23 = 788.25/x
3. Step 3: Cross multiply
   2,543.32x = 3,815.23 × 788.25
4. Step 4: Simplify right side
   2,543.32x = 3,007,355.05
5. Step 5: Solve for x
   x = 3,007,355.05/2,543.32
6. Step 6: Final answer
   x = 1,182.45