Finding the Fourth Proportional to 1,934.23, 2,667.86 and 1,188.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,934.23 : 2,667.86 = 1,188.59 : x
2. Step 2: Convert to fraction form
   1,934.23/2,667.86 = 1,188.59/x
3. Step 3: Cross multiply
   1,934.23x = 2,667.86 × 1,188.59
4. Step 4: Simplify right side
   1,934.23x = 3,170,986.90
5. Step 5: Solve for x
   x = 3,170,986.90/1,934.23
6. Step 6: Final answer
   x = 1,639.41