Finding the Fourth Proportional to 2,519.17, 3,476.18 and 1,399.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,519.17 : 3,476.18 = 1,399.92 : x
2. Step 2: Convert to fraction form
   2,519.17/3,476.18 = 1,399.92/x
3. Step 3: Cross multiply
   2,519.17x = 3,476.18 × 1,399.92
4. Step 4: Simplify right side
   2,519.17x = 4,866,386.32
5. Step 5: Solve for x
   x = 4,866,386.32/2,519.17
6. Step 6: Final answer
   x = 1,931.75