Finding the Fourth Proportional to 2,730.02, 4,093.83 and 781.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,730.02 : 4,093.83 = 781.78 : x
2. Step 2: Convert to fraction form
   2,730.02/4,093.83 = 781.78/x
3. Step 3: Cross multiply
   2,730.02x = 4,093.83 × 781.78
4. Step 4: Simplify right side
   2,730.02x = 3,200,474.42
5. Step 5: Solve for x
   x = 3,200,474.42/2,730.02
6. Step 6: Final answer
   x = 1,172.33