Finding the Fourth Proportional to 1,075.98, 1,614.12 and 345.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,075.98 : 1,614.12 = 345.71 : x
2. Step 2: Convert to fraction form
   1,075.98/1,614.12 = 345.71/x
3. Step 3: Cross multiply
   1,075.98x = 1,614.12 × 345.71
4. Step 4: Simplify right side
   1,075.98x = 558,017.43
5. Step 5: Solve for x
   x = 558,017.43/1,075.98
6. Step 6: Final answer
   x = 518.61