Finding the Fourth Proportional to 2,488.05, 3,729.65 and 1,188.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.05 : 3,729.65 = 1,188.81 : x
2. Step 2: Convert to fraction form
   2,488.05/3,729.65 = 1,188.81/x
3. Step 3: Cross multiply
   2,488.05x = 3,729.65 × 1,188.81
4. Step 4: Simplify right side
   2,488.05x = 4,433,839.27
5. Step 5: Solve for x
   x = 4,433,839.27/2,488.05
6. Step 6: Final answer
   x = 1,782.05