Finding the Fourth Proportional to 2,567.79, 3,851.69 and 620.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,567.79 : 3,851.69 = 620.00 : x
2. Step 2: Convert to fraction form
   2,567.79/3,851.69 = 620.00/x
3. Step 3: Cross multiply
   2,567.79x = 3,851.69 × 620.00
4. Step 4: Simplify right side
   2,567.79x = 2,388,025.44
5. Step 5: Solve for x
   x = 2,388,025.44/2,567.79
6. Step 6: Final answer
   x = 929.99