Finding the Fourth Proportional to 2,667.71, 4,003.70 and 1,206.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.71 : 4,003.70 = 1,206.99 : x
2. Step 2: Convert to fraction form
   2,667.71/4,003.70 = 1,206.99/x
3. Step 3: Cross multiply
   2,667.71x = 4,003.70 × 1,206.99
4. Step 4: Simplify right side
   2,667.71x = 4,832,419.83
5. Step 5: Solve for x
   x = 4,832,419.83/2,667.71
6. Step 6: Final answer
   x = 1,811.45