Finding the Fourth Proportional to 1,667.48, 2,500.67 and 789.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.48 : 2,500.67 = 789.86 : x
2. Step 2: Convert to fraction form
   1,667.48/2,500.67 = 789.86/x
3. Step 3: Cross multiply
   1,667.48x = 2,500.67 × 789.86
4. Step 4: Simplify right side
   1,667.48x = 1,975,179.21
5. Step 5: Solve for x
   x = 1,975,179.21/1,667.48
6. Step 6: Final answer
   x = 1,184.53