Finding the Fourth Proportional to 1,608.47, 2,219.72 and 1,254.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.47 : 2,219.72 = 1,254.79 : x
2. Step 2: Convert to fraction form
   1,608.47/2,219.72 = 1,254.79/x
3. Step 3: Cross multiply
   1,608.47x = 2,219.72 × 1,254.79
4. Step 4: Simplify right side
   1,608.47x = 2,785,284.69
5. Step 5: Solve for x
   x = 2,785,284.69/1,608.47
6. Step 6: Final answer
   x = 1,731.64