Finding the Fourth Proportional to 1,667.75, 2,301.68 and 1,387.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.75 : 2,301.68 = 1,387.49 : x
2. Step 2: Convert to fraction form
   1,667.75/2,301.68 = 1,387.49/x
3. Step 3: Cross multiply
   1,667.75x = 2,301.68 × 1,387.49
4. Step 4: Simplify right side
   1,667.75x = 3,193,549.94
5. Step 5: Solve for x
   x = 3,193,549.94/1,667.75
6. Step 6: Final answer
   x = 1,914.89