Finding the Fourth Proportional to 2,617.95, 3,612.77 and 1,439.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.95 : 3,612.77 = 1,439.00 : x
2. Step 2: Convert to fraction form
   2,617.95/3,612.77 = 1,439.00/x
3. Step 3: Cross multiply
   2,617.95x = 3,612.77 × 1,439.00
4. Step 4: Simplify right side
   2,617.95x = 5,198,769.72
5. Step 5: Solve for x
   x = 5,198,769.72/2,617.95
6. Step 6: Final answer
   x = 1,985.81