Finding the Fourth Proportional to 2,311.79, 3,467.06 and 1,078.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,311.79 : 3,467.06 = 1,078.00 : x
2. Step 2: Convert to fraction form
   2,311.79/3,467.06 = 1,078.00/x
3. Step 3: Cross multiply
   2,311.79x = 3,467.06 × 1,078.00
4. Step 4: Simplify right side
   2,311.79x = 3,737,476.04
5. Step 5: Solve for x
   x = 3,737,476.04/2,311.79
6. Step 6: Final answer
   x = 1,616.70