Finding the Fourth Proportional to 3,131.00, 4,320.72 and 1,804.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.00 : 4,320.72 = 1,804.63 : x
2. Step 2: Convert to fraction form
   3,131.00/4,320.72 = 1,804.63/x
3. Step 3: Cross multiply
   3,131.00x = 4,320.72 × 1,804.63
4. Step 4: Simplify right side
   3,131.00x = 7,797,290.13
5. Step 5: Solve for x
   x = 7,797,290.13/3,131.00
6. Step 6: Final answer
   x = 2,490.35