Finding the Fourth Proportional to 2,390.00, 3,581.90 and 1,072.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.00 : 3,581.90 = 1,072.79 : x
2. Step 2: Convert to fraction form
   2,390.00/3,581.90 = 1,072.79/x
3. Step 3: Cross multiply
   2,390.00x = 3,581.90 × 1,072.79
4. Step 4: Simplify right side
   2,390.00x = 3,842,603.23
5. Step 5: Solve for x
   x = 3,842,603.23/2,390.00
6. Step 6: Final answer
   x = 1,607.79