Finding the Fourth Proportional to 1,371.61, 1,895.22 and 1,079.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,371.61 : 1,895.22 = 1,079.20 : x
2. Step 2: Convert to fraction form
   1,371.61/1,895.22 = 1,079.20/x
3. Step 3: Cross multiply
   1,371.61x = 1,895.22 × 1,079.20
4. Step 4: Simplify right side
   1,371.61x = 2,045,321.42
5. Step 5: Solve for x
   x = 2,045,321.42/1,371.61
6. Step 6: Final answer
   x = 1,491.18