Finding the Fourth Proportional to 2,075.72, 3,113.58 and 614.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.72 : 3,113.58 = 614.88 : x
2. Step 2: Convert to fraction form
   2,075.72/3,113.58 = 614.88/x
3. Step 3: Cross multiply
   2,075.72x = 3,113.58 × 614.88
4. Step 4: Simplify right side
   2,075.72x = 1,914,480.38
5. Step 5: Solve for x
   x = 1,914,480.38/2,075.72
6. Step 6: Final answer
   x = 922.32