Finding the Fourth Proportional to 1,667.40, 2,291.80 and 1,469.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.40 : 2,291.80 = 1,469.76 : x
2. Step 2: Convert to fraction form
   1,667.40/2,291.80 = 1,469.76/x
3. Step 3: Cross multiply
   1,667.40x = 2,291.80 × 1,469.76
4. Step 4: Simplify right side
   1,667.40x = 3,368,395.97
5. Step 5: Solve for x
   x = 3,368,395.97/1,667.40
6. Step 6: Final answer
   x = 2,020.15