Finding the Fourth Proportional to 3,156.78, 4,736.74 and 2,321.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,156.78 : 4,736.74 = 2,321.79 : x
2. Step 2: Convert to fraction form
   3,156.78/4,736.74 = 2,321.79/x
3. Step 3: Cross multiply
   3,156.78x = 4,736.74 × 2,321.79
4. Step 4: Simplify right side
   3,156.78x = 10,997,691.88
5. Step 5: Solve for x
   x = 10,997,691.88/3,156.78
6. Step 6: Final answer
   x = 3,483.83