Finding the Fourth Proportional to 1,345.62, 2,018.18 and 371.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.62 : 2,018.18 = 371.82 : x
2. Step 2: Convert to fraction form
   1,345.62/2,018.18 = 371.82/x
3. Step 3: Cross multiply
   1,345.62x = 2,018.18 × 371.82
4. Step 4: Simplify right side
   1,345.62x = 750,399.69
5. Step 5: Solve for x
   x = 750,399.69/1,345.62
6. Step 6: Final answer
   x = 557.66