Finding the Fourth Proportional to 2,543.22, 3,815.23 and 787.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,543.22 : 3,815.23 = 787.82 : x
2. Step 2: Convert to fraction form
   2,543.22/3,815.23 = 787.82/x
3. Step 3: Cross multiply
   2,543.22x = 3,815.23 × 787.82
4. Step 4: Simplify right side
   2,543.22x = 3,005,693.45
5. Step 5: Solve for x
   x = 3,005,693.45/2,543.22
6. Step 6: Final answer
   x = 1,181.85