Finding the Fourth Proportional to 2,119.86, 2,924.73 and 1,188.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,119.86 : 2,924.73 = 1,188.18 : x
2. Step 2: Convert to fraction form
   2,119.86/2,924.73 = 1,188.18/x
3. Step 3: Cross multiply
   2,119.86x = 2,924.73 × 1,188.18
4. Step 4: Simplify right side
   2,119.86x = 3,475,105.69
5. Step 5: Solve for x
   x = 3,475,105.69/2,119.86
6. Step 6: Final answer
   x = 1,639.31