Finding the Fourth Proportional to 1,935.33, 2,667.87 and 1,188.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,935.33 : 2,667.87 = 1,188.71 : x
2. Step 2: Convert to fraction form
   1,935.33/2,667.87 = 1,188.71/x
3. Step 3: Cross multiply
   1,935.33x = 2,667.87 × 1,188.71
4. Step 4: Simplify right side
   1,935.33x = 3,171,335.42
5. Step 5: Solve for x
   x = 3,171,335.42/1,935.33
6. Step 6: Final answer
   x = 1,638.65