Finding the Fourth Proportional to 1,612.10, 2,417.76 and 674.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,612.10 : 2,417.76 = 674.54 : x
2. Step 2: Convert to fraction form
   1,612.10/2,417.76 = 674.54/x
3. Step 3: Cross multiply
   1,612.10x = 2,417.76 × 674.54
4. Step 4: Simplify right side
   1,612.10x = 1,630,875.83
5. Step 5: Solve for x
   x = 1,630,875.83/1,612.10
6. Step 6: Final answer
   x = 1,011.65