Finding the Fourth Proportional to 2,479.31, 3,715.72 and 1,017.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479.31 : 3,715.72 = 1,017.66 : x
2. Step 2: Convert to fraction form
   2,479.31/3,715.72 = 1,017.66/x
3. Step 3: Cross multiply
   2,479.31x = 3,715.72 × 1,017.66
4. Step 4: Simplify right side
   2,479.31x = 3,781,339.62
5. Step 5: Solve for x
   x = 3,781,339.62/2,479.31
6. Step 6: Final answer
   x = 1,525.16