Finding the Fourth Proportional to 1,667.70, 2,300.61 and 1,078.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.70 : 2,300.61 = 1,078.74 : x
2. Step 2: Convert to fraction form
   1,667.70/2,300.61 = 1,078.74/x
3. Step 3: Cross multiply
   1,667.70x = 2,300.61 × 1,078.74
4. Step 4: Simplify right side
   1,667.70x = 2,481,760.03
5. Step 5: Solve for x
   x = 2,481,760.03/1,667.70
6. Step 6: Final answer
   x = 1,488.13