Finding the Fourth Proportional to 2,663.16, 3,988.62 and 1,490.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663.16 : 3,988.62 = 1,490.57 : x
2. Step 2: Convert to fraction form
   2,663.16/3,988.62 = 1,490.57/x
3. Step 3: Cross multiply
   2,663.16x = 3,988.62 × 1,490.57
4. Step 4: Simplify right side
   2,663.16x = 5,945,297.37
5. Step 5: Solve for x
   x = 5,945,297.37/2,663.16
6. Step 6: Final answer
   x = 2,232.42