Finding the Fourth Proportional to 3,156.30, 4,734.51 and 1,076.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,156.30 : 4,734.51 = 1,076.78 : x
2. Step 2: Convert to fraction form
   3,156.30/4,734.51 = 1,076.78/x
3. Step 3: Cross multiply
   3,156.30x = 4,734.51 × 1,076.78
4. Step 4: Simplify right side
   3,156.30x = 5,098,041.55
5. Step 5: Solve for x
   x = 5,098,041.55/3,156.30
6. Step 6: Final answer
   x = 1,615.19