Finding the Fourth Proportional to 2,642.00, 3,964.99 and 1,807.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,642.00 : 3,964.99 = 1,807.06 : x
2. Step 2: Convert to fraction form
   2,642.00/3,964.99 = 1,807.06/x
3. Step 3: Cross multiply
   2,642.00x = 3,964.99 × 1,807.06
4. Step 4: Simplify right side
   2,642.00x = 7,164,960.40
5. Step 5: Solve for x
   x = 7,164,960.40/2,642.00
6. Step 6: Final answer
   x = 2,711.95