Finding the Fourth Proportional to 1,786.62, 2,667.13 and 1,553.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,786.62 : 2,667.13 = 1,553.14 : x
2. Step 2: Convert to fraction form
   1,786.62/2,667.13 = 1,553.14/x
3. Step 3: Cross multiply
   1,786.62x = 2,667.13 × 1,553.14
4. Step 4: Simplify right side
   1,786.62x = 4,142,426.29
5. Step 5: Solve for x
   x = 4,142,426.29/1,786.62
6. Step 6: Final answer
   x = 2,318.58