Finding the Fourth Proportional to 1,608.42, 2,219.70 and 1,258.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.42 : 2,219.70 = 1,258.50 : x
2. Step 2: Convert to fraction form
   1,608.42/2,219.70 = 1,258.50/x
3. Step 3: Cross multiply
   1,608.42x = 2,219.70 × 1,258.50
4. Step 4: Simplify right side
   1,608.42x = 2,793,492.45
5. Step 5: Solve for x
   x = 2,793,492.45/1,608.42
6. Step 6: Final answer
   x = 1,736.79