Finding the Fourth Proportional to 2,075.47, 3,112.69 and 614.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.47 : 3,112.69 = 614.63 : x
2. Step 2: Convert to fraction form
   2,075.47/3,112.69 = 614.63/x
3. Step 3: Cross multiply
   2,075.47x = 3,112.69 × 614.63
4. Step 4: Simplify right side
   2,075.47x = 1,913,158.90
5. Step 5: Solve for x
   x = 1,913,158.90/2,075.47
6. Step 6: Final answer
   x = 921.80