Finding the Fourth Proportional to 2,930.55, 4,395.69 and 850.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,930.55 : 4,395.69 = 850.50 : x
2. Step 2: Convert to fraction form
   2,930.55/4,395.69 = 850.50/x
3. Step 3: Cross multiply
   2,930.55x = 4,395.69 × 850.50
4. Step 4: Simplify right side
   2,930.55x = 3,738,534.35
5. Step 5: Solve for x
   x = 3,738,534.35/2,930.55
6. Step 6: Final answer
   x = 1,275.71