Finding the Fourth Proportional to 1,667.46, 2,295.70 and 1,372.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.46 : 2,295.70 = 1,372.20 : x
2. Step 2: Convert to fraction form
   1,667.46/2,295.70 = 1,372.20/x
3. Step 3: Cross multiply
   1,667.46x = 2,295.70 × 1,372.20
4. Step 4: Simplify right side
   1,667.46x = 3,150,159.54
5. Step 5: Solve for x
   x = 3,150,159.54/1,667.46
6. Step 6: Final answer
   x = 1,889.20