Finding the Fourth Proportional to 2,490.59, 3,731.09 and 1,395.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,490.59 : 3,731.09 = 1,395.72 : x
2. Step 2: Convert to fraction form
   2,490.59/3,731.09 = 1,395.72/x
3. Step 3: Cross multiply
   2,490.59x = 3,731.09 × 1,395.72
4. Step 4: Simplify right side
   2,490.59x = 5,207,564.38
5. Step 5: Solve for x
   x = 5,207,564.38/2,490.59
6. Step 6: Final answer
   x = 2,090.90