Finding the Fourth Proportional to 1,667.44, 2,319.46 and 1,635.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.44 : 2,319.46 = 1,635.76 : x
2. Step 2: Convert to fraction form
   1,667.44/2,319.46 = 1,635.76/x
3. Step 3: Cross multiply
   1,667.44x = 2,319.46 × 1,635.76
4. Step 4: Simplify right side
   1,667.44x = 3,794,079.89
5. Step 5: Solve for x
   x = 3,794,079.89/1,667.44
6. Step 6: Final answer
   x = 2,275.39