Finding the Fourth Proportional to 1,605.34, 2,212.95 and 1,255.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605.34 : 2,212.95 = 1,255.42 : x
2. Step 2: Convert to fraction form
   1,605.34/2,212.95 = 1,255.42/x
3. Step 3: Cross multiply
   1,605.34x = 2,212.95 × 1,255.42
4. Step 4: Simplify right side
   1,605.34x = 2,778,181.69
5. Step 5: Solve for x
   x = 2,778,181.69/1,605.34
6. Step 6: Final answer
   x = 1,730.59