Finding the Fourth Proportional to 2,399.83, 3,599.03 and 1,012.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.83 : 3,599.03 = 1,012.40 : x
2. Step 2: Convert to fraction form
   2,399.83/3,599.03 = 1,012.40/x
3. Step 3: Cross multiply
   2,399.83x = 3,599.03 × 1,012.40
4. Step 4: Simplify right side
   2,399.83x = 3,643,656.00
5. Step 5: Solve for x
   x = 3,643,656.00/2,399.83
6. Step 6: Final answer
   x = 1,518.30