Finding the Fourth Proportional to 2,311.32, 3,465 and 1,578.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,311.32 : 3,465 = 1,578.72 : x
2. Step 2: Convert to fraction form
   2,311.32/3,465 = 1,578.72/x
3. Step 3: Cross multiply
   2,311.32x = 3,465 × 1,578.72
4. Step 4: Simplify right side
   2,311.32x = 5,470,264.80
5. Step 5: Solve for x
   x = 5,470,264.80/2,311.32
6. Step 6: Final answer
   x = 2,366.73