Finding the Fourth Proportional to 3,156.83, 4,735.52 and 816.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,156.83 : 4,735.52 = 816.81 : x
2. Step 2: Convert to fraction form
   3,156.83/4,735.52 = 816.81/x
3. Step 3: Cross multiply
   3,156.83x = 4,735.52 × 816.81
4. Step 4: Simplify right side
   3,156.83x = 3,868,016.01
5. Step 5: Solve for x
   x = 3,868,016.01/3,156.83
6. Step 6: Final answer
   x = 1,225.29