Finding the Fourth Proportional to 2,390.40, 3,303.32 and 1,799.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.40 : 3,303.32 = 1,799.91 : x
2. Step 2: Convert to fraction form
   2,390.40/3,303.32 = 1,799.91/x
3. Step 3: Cross multiply
   2,390.40x = 3,303.32 × 1,799.91
4. Step 4: Simplify right side
   2,390.40x = 5,945,669.70
5. Step 5: Solve for x
   x = 5,945,669.70/2,390.40
6. Step 6: Final answer
   x = 2,487.31