Finding the Fourth Proportional to 2,810.25, 4,215.42 and 758.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,810.25 : 4,215.42 = 758.25 : x
2. Step 2: Convert to fraction form
   2,810.25/4,215.42 = 758.25/x
3. Step 3: Cross multiply
   2,810.25x = 4,215.42 × 758.25
4. Step 4: Simplify right side
   2,810.25x = 3,196,342.22
5. Step 5: Solve for x
   x = 3,196,342.22/2,810.25
6. Step 6: Final answer
   x = 1,137.39