Finding the Fourth Proportional to 2,075.50, 3,112.15 and 614.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.50 : 3,112.15 = 614.45 : x
2. Step 2: Convert to fraction form
   2,075.50/3,112.15 = 614.45/x
3. Step 3: Cross multiply
   2,075.50x = 3,112.15 × 614.45
4. Step 4: Simplify right side
   2,075.50x = 1,912,260.57
5. Step 5: Solve for x
   x = 1,912,260.57/2,075.50
6. Step 6: Final answer
   x = 921.35