Finding the Fourth Proportional to 1,479.75, 2,215.71 and 1,185.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,479.75 : 2,215.71 = 1,185.87 : x
2. Step 2: Convert to fraction form
   1,479.75/2,215.71 = 1,185.87/x
3. Step 3: Cross multiply
   1,479.75x = 2,215.71 × 1,185.87
4. Step 4: Simplify right side
   1,479.75x = 2,627,544.02
5. Step 5: Solve for x
   x = 2,627,544.02/1,479.75
6. Step 6: Final answer
   x = 1,775.67